128-629: Birth control , also known as contraception , anticonception , and fertility control , is the use of methods or devices to prevent pregnancy . Birth control has been used since ancient times, but effective and safe methods of birth control only became available in the 20th century. Planning, making available, and using human birth control is called family planning . Some cultures limit or discourage access to birth control because they consider it to be morally, religiously, or politically undesirable. The World Health Organization and United States Centers for Disease Control and Prevention provide guidance on
256-492: A medical exam —including birth control pills, injectable or implantable birth control, and condoms. For example, a pelvic exam , breast exam , or blood test before starting birth control pills does not appear to affect outcomes. In 2009, the World Health Organization (WHO) published a detailed list of medical eligibility criteria for each type of birth control. Hormonal contraception is available in
384-527: A tubal reversal to reconnect the fallopian tubes or a vasectomy reversal to reconnect the vasa deferentia . In women, the desire for a reversal is often associated with a change in spouse. Pregnancy success rates after tubal reversal are between 31 and 88 percent, with complications including an increased risk of ectopic pregnancy . The number of males who request reversal is between 2 and 6 percent. Rates of success in fathering another child after reversal are between 38 and 84 percent; with success being lower
512-429: A 6% first-year rate with the diaphragm. Condoms have the additional benefit of helping to prevent the spread of some sexually transmitted infections such as HIV/AIDS , however, condoms made from animal intestine do not. Contraceptive sponges combine a barrier with a spermicide. Like diaphragms, they are inserted vaginally before intercourse and must be placed over the cervix to be effective. Typical failure rates during
640-472: A UK study, when a three-month "bridge" supply of the progestogen-only pill was provided by a pharmacist along with emergency contraception after sexual activity, this intervention was shown to increase the likelihood that the person would begin to use an effective method of long-term contraception. Levonorgestrel pills, when used within 3 days, decrease the chance of pregnancy after a single episode of unprotected sex or condom failure by 70% (resulting in
768-682: A base covered in oils or other gummy substances. Many of Soranus's methods were probably also ineffective. In medieval Europe, any effort to halt pregnancy was deemed immoral by the Catholic Church , although it is believed that women of the time still used a number of birth control measures, such as coitus interruptus and inserting lily root and rue into the vagina. Women in the Middle Ages were also encouraged to tie weasel testicles around their thighs during sex to prevent pregnancy. The oldest condoms discovered to date were recovered in
896-404: A certain probability of occurring within the limits of the estimated due date. A study of singleton live births came to the result that childbirth has a standard deviation of 14 days when gestational age is estimated by first trimester ultrasound , and 16 days when estimated directly by last menstrual period. Fertility and fecundity are the respective capacities to fertilize and establish
1024-405: A clinical pregnancy and have a live birth. Infertility is an impaired ability to establish a clinical pregnancy and sterility is the permanent inability to establish a clinical pregnancy. The capacity for pregnancy depends on the reproductive system , its development and its variation , as well as on the condition of a person. Women as well as intersex and transgender people who have
1152-404: A family, like child care work, or actual habitual daily labour that is not monetarily rewarded, like working the fields. Unpaid workers have zero earnings , and although their work is valuable, it is hard to estimate its true value. The controversial debate still stands. Men and women tend to work in different areas of the economy, regardless of whether their work is paid or unpaid. Women focus on
1280-404: A functioning female reproductive system are capable of pregnancy. In some cases, someone might be able to produce fertilizable eggs, but might not have a womb or none that can sufficiently gestate, in which case they might find surrogacy . Through an interplay of hormones that includes follicle stimulating hormone that stimulates folliculogenesis and oogenesis creates a mature egg cell ,
1408-889: A given method during the first year, and sometimes as a lifetime failure rate among methods with high effectiveness, such as tubal ligation . Birth control methods fall into two main categories: male contraception and female contraception . Common male contraceptives are withdrawal , condoms , and vasectomy . Female contraception is more developed compared to male contraception, these include contraceptive pills (combination and progestin-only pill), hormonal or non-hormonal IUD , patch , vaginal ring , diaphragm , shot , implant , fertility awareness , and tubal ligation . The most effective methods are those that are long acting and do not require ongoing health care visits. Surgical sterilization, implantable hormones, and intrauterine devices all have first-year failure rates of less than 1%. Hormonal contraceptive pills, patches or vaginal rings, and
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#17327840421431536-487: A man's erect penis and physically block ejaculated sperm from entering the body of a sexual partner. Modern condoms are most often made from latex , but some are made from other materials such as polyurethane , or lamb's intestine. Female condoms are also available, most often made of nitrile , latex or polyurethane. Male condoms have the advantage of being inexpensive, easy to use, and have few adverse effects. Making condoms available to teenagers does not appear to affect
1664-405: A number of different forms, including oral pills , implants under the skin, injections , patches , IUDs and a vaginal ring . They are currently available only for women, although hormonal contraceptives for men have been and are being clinically tested. There are two types of oral birth control pills, the combined oral contraceptive pills (which contain both estrogen and a progestin ) and
1792-415: A pregnancy 12 to 15 days after fertilization. A quantitative blood test can determine approximately the date the embryo was fertilized because hCG levels double every 36 to 72 hours before 8 weeks' gestation. A single test of progesterone levels can also help determine how likely a fetus will survive in those with a threatened miscarriage (bleeding in early pregnancy), but only if the ultrasound result
1920-472: A pregnancy rate of 2.2%). Ulipristal , when used within 5 days, decreases the chance of pregnancy by about 85% (pregnancy rate 1.4%) and is more effective than levonorgestrel. Mifepristone is also more effective than levonorgestrel, while copper IUDs are the most effective method. IUDs can be inserted up to five days after intercourse and prevent about 99% of pregnancies after an episode of unprotected sex (pregnancy rate of 0.1 to 0.2%). This makes them
2048-400: A pregnancy to a viable stage . Twins and other multiple births are counted as one pregnancy and birth. A woman who has never been pregnant is referred to as a nulligravida. A woman who is (or has been only) pregnant for the first time is referred to as a primigravida , and a woman in subsequent pregnancies as a multigravida or as multiparous. Therefore, during a second pregnancy
2176-585: A pregnancy, delivery and care of a newborn in the United States is on average $ 21,000 for a vaginal delivery and $ 31,000 for a caesarean delivery as of 2012. In most other countries, the cost is less than half. For a child born in 2011, an average US family will spend $ 235,000 over 17 years to raise them. Globally, as of 2009, approximately 60% of those who are married and able to have children use birth control. How frequently different methods are used varies widely between countries. The most common method in
2304-412: A pregnancy; however, they are usually not felt until the second or third trimester. Final weight gain takes place during the third trimester; this is the most weight gain throughout the pregnancy. The woman's abdomen will transform in shape as the fetus turns in a downward position ready for birth. The woman's navel will sometimes become convex, "popping" out, due to the expanding abdomen . The uterus,
2432-429: A previous delivery. Delaying another pregnancy after a miscarriage , however, does not appear to alter risk and women are advised to attempt pregnancy in this situation whenever they are ready. Teenage pregnancies , especially among younger teens, are at greater risk of adverse outcomes including early birth , low birth weight , and death of the infant . In 2012 in the United States 82% of pregnancies in those between
2560-433: A primary method have backup methods available (such as condoms or emergency contraceptive pills). The lactational amenorrhea method involves the use of a woman's natural postpartum infertility which occurs after delivery and may be extended by breastfeeding . For a postpartum woman to be infertile (protected from pregnancy), their periods have usually not yet returned (not menstruating), they are exclusively breastfeeding
2688-494: A result of rape, and public health efforts emphasizing abstinence to reduce unwanted pregnancy may have limited effectiveness, especially in developing countries and among disadvantaged groups . Deliberate non-penetrative sex without vaginal sex or deliberate oral sex without vaginal sex are also sometimes considered birth control. While this generally avoids pregnancy, pregnancy can still occur with intercrural sex and other forms of penis-near-vagina sex (genital rubbing, and
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#17327840421432816-471: A woman drink a copper salt dissolved in water, which it claimed would prevent pregnancy for a year. This method was not only ineffective, but also dangerous, as the later medical writer Soranus of Ephesus ( c. 98–138 AD) pointed out. Soranus attempted to list reliable methods of birth control based on rational principles. He rejected the use of superstition and amulets and instead prescribed mechanical methods such as vaginal plugs and pessaries using wool as
2944-460: A woman undergoes many normal physiological changes, including behavioral , cardiovascular , hematologic , metabolic , renal , and respiratory changes. Increases in blood sugar , breathing , and cardiac output are all required. Levels of progesterone and estrogens rise continually throughout pregnancy, suppressing the hypothalamic axis and therefore the menstrual cycle . A full-term pregnancy at an early age (less than 25 years) reduces
3072-913: A woman would be described as gravida 2, para 1 and upon live delivery as gravida 2, para 2. In-progress pregnancies, abortions , miscarriages and/or stillbirths account for parity values being less than the gravida number. Women who have never carried a pregnancy more than 20 weeks are referred to as nulliparous . A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and postterm at or beyond 42 weeks of gestation. American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks. The terms preterm and postterm have largely replaced earlier terms of premature and postmature . Preterm and postterm are defined above, whereas premature and postmature have historical meaning and relate more to
3200-500: A year. Part of the reason that many women are without birth control is that many countries limit access due to religious or political reasons, while another contributor is poverty. Due to restrictive abortion laws in Sub-Saharan Africa, many women turn to unlicensed abortion providers for unintended pregnancy , resulting in about 2–4% obtaining unsafe abortions each year. The Egyptian Ebers Papyrus from 1550 BC and
3328-400: Is 0.2%; the typical use first failure rate is 6%. Barrier contraceptives are devices that attempt to prevent pregnancy by physically preventing sperm from entering the uterus . They include male condoms , female condoms , cervical caps , diaphragms , and contraceptive sponges with spermicide . Globally, condoms are the most common method of birth control. Male condoms are put on
3456-483: Is a high concern, using two methods at the same time is reasonable. For example, two forms of birth control are recommended in those taking the anti- acne drug isotretinoin or anti-epileptic drugs like carbamazepine , due to the high risk of birth defects if taken during pregnancy. Contraceptive use in developing countries is estimated to have decreased the number of maternal deaths by 40% (about 270,000 deaths prevented in 2008) and could prevent 70% of deaths if
3584-580: Is a standard way of calculating the due date for a pregnancy when assuming a gestational age of 280 days at childbirth. The rule estimates the expected date of delivery (EDD) by adding a year, subtracting three months, and adding seven days to the origin of gestational age. Alternatively there are mobile apps , which essentially always give consistent estimations compared to each other and correct for leap year , while pregnancy wheels made of paper can differ from each other by 7 days and generally do not correct for leap year. Furthermore, actual childbirth has only
3712-578: Is also a form of birth control, but abstinence-only sex education may increase teenage pregnancies if offered without birth control education, due to non-compliance. In teenagers , pregnancies are at greater risk of poor outcomes. Comprehensive sex education and access to birth control decreases the rate of unintended pregnancies in this age group. While all forms of birth control can generally be used by young people, long-acting reversible birth control such as implants, IUDs, or vaginal rings are more successful in reducing rates of teenage pregnancy. After
3840-503: Is always unstructured and unregulated. Formal employment is more reliable than informal employment. Generally, the former yields higher income and greater benefits and securities for both men and women. The contribution of informal labourers is immense. Informal labour is expanding globally, most significantly in developing countries . According to a study done by Jacques Charmes, in the year 2000 informal labour made up 57% of non-agricultural employment, 40% of urban employment, and 83% of
3968-770: Is an overall larger source of employment for females than it is for males. Women frequent the informal sector of the economy through occupations like home-based workers and street vendors . The Penguin Atlas of Women in the World shows that in the 1990s, 81% of women in Benin were street vendors, 55% in Guatemala, 44% in Mexico, 33% in Kenya, and 14% in India. Overall, 60% of women workers in
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4096-474: Is at its highest. Around the middle of the second trimester, movement of the fetus may be felt. At 28 weeks, more than 90% of babies can survive outside of the uterus if provided with high-quality medical care , though babies born at this time will likely experience serious health complications such as heart and respiratory problems and long-term intellectual and developmental disabilities. Prenatal care improves pregnancy outcomes. Nutrition during pregnancy
4224-569: Is available in the form of tubal ligation for women and vasectomy for men. Tubal ligation decreases the risk of ovarian cancer . Short term complications are twenty times less likely from a vasectomy than a tubal ligation. After a vasectomy, there may be swelling and pain of the scrotum which usually resolves in one or two weeks. Chronic scrotal pain associated with negative impact on quality of life occurs after vasectomy in about 1–2% of men. With tubal ligation, complications occur in 1 to 2 percent of procedures with serious complications usually due to
4352-403: Is called "full term". Whenever possible, waiting for labor to begin on its own in this time period is best for the health of the mother and baby. The decision to perform an induction must be made after weighing the risks and benefits, but is safer after 39 weeks. Events after 42 weeks are considered postterm . When a pregnancy exceeds 42 weeks, the risk of complications for both the woman and
4480-416: Is defined as the ratio of the civilian labour force to the noninstitutional civilian population. Labour force participation rate = Labour force Noninstitutional civilian population {\displaystyle {\text{Labour force participation rate}}={\dfrac {\text{Labour force}}{\text{Noninstitutional civilian population}}}} Formal labour is any sort of employment that
4608-406: Is divided into three trimesters of approximately three months each. The first trimester includes conception, which is when the sperm fertilizes the egg. The fertilized egg then travels down the fallopian tube and attaches to the inside of the uterus , where it begins to form the embryo and placenta . During the first trimester, the possibility of miscarriage (natural death of embryo or fetus)
4736-436: Is imperative. In the developing world, birth control increases economic growth due to there being fewer dependent children and thus more women participating in or increased contribution to the workforce – as they are usually the primary caregiver for children. Women's earnings, assets, body mass index , and their children's schooling and body mass index all improve with greater access to birth control. Family planning , via
4864-401: Is important to ensure healthy growth of the fetus. Prenatal care may also include avoiding recreational drugs (including tobacco and alcohol ), taking regular exercise, having blood tests , and regular physical examinations . Complications of pregnancy may include disorders of high blood pressure , gestational diabetes , iron-deficiency anemia , and severe nausea and vomiting . In
4992-438: Is known as a blastocyst . The blastocyst arrives at the uterus and attaches to the uterine wall, a process known as implantation . The development of the mass of cells that will become the infant is called embryogenesis during the first approximately ten weeks of gestation. During this time, cells begin to differentiate into the various body systems. The basic outlines of the organ, body, and nervous systems are established. By
5120-466: Is not recommended unless required for other medical reasons. Associated terms for pregnancy are gravid and parous . Gravidus and gravid come from the Latin word meaning "heavy" and a pregnant female is sometimes referred to as a gravida . Gravidity refers to the number of times that a female has been pregnant. Similarly, the term parity is used for the number of times that a female carries
5248-545: Is often compounded by their lack of access to credit and financial liquidity compared to larger businesses . A farmworker , farmhand or agricultural worker is someone employed for labor in agriculture. In labor law, the term "farmworker" is sometimes used more narrowly, applying only to a hired worker involved in agricultural production, including harvesting, but not to a worker in other on- farm jobs, such as picking fruit. Agricultural work varies widely depending on context, degree of mechanization and crop. In countries like
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5376-590: Is poor as the majority of people in trials stop their use early. Globally, they are used by about 3.6% of couples. If based on both basal body temperature and another primary sign, the method is referred to as symptothermal. First-year failure rates of 20% overall and 0.4% for perfect use have been reported in clinical studies of the symptothermal method. A number of fertility tracking apps are available, as of 2016, but they are more commonly designed to assist those trying to get pregnant rather than prevent pregnancy. The withdrawal method (also known as coitus interruptus)
5504-410: Is primitive neural activity rather than the beginning of conscious brain activity. Synapses do not begin to form until week 17. Neural connections between the sensory cortex and thalamus develop as early as 24 weeks' gestational age, but the first evidence of their function does not occur until around 30 weeks, when minimal consciousness , dreaming , and the ability to feel pain emerges. Although
5632-415: Is recommended that birth control be continued for one year after the last menstrual period . About 222 million women who want to avoid pregnancy in developing countries are not using a modern birth control method. Birth control use in developing countries has decreased the number of deaths during or around the time of pregnancy by 40% (about 270,000 deaths prevented in 2008) and could prevent 70% if
5760-454: Is sometimes used as the initiation of pregnancy, with the derived age being termed fertilization age . Fertilization usually occurs about two weeks before the next expected menstrual period. A third point in time is also considered by some people to be the true beginning of a pregnancy: This is time of implantation, when the future fetus attaches to the lining of the uterus. This is about a week to ten days after fertilization. The sperm and
5888-510: Is structured and paid in a formal way. They are paid formally using payrolls paper, electronic card and alike. Unlike the informal sector of the economy, formal labour within a country contributes to that country's gross national product . Informal labour is labour that falls short of being a formal arrangement in law or in practice. Labour inherit may come as formal or non-formal , an employee old enough but below retirement age bracket passing on to his children. It can be paid or unpaid and it
6016-461: Is the connecting cord from the embryo or fetus to the placenta. After about ten weeks of gestational age—which is the same as eight weeks after conception—the embryo becomes known as a fetus . At the beginning of the fetal stage, the risk of miscarriage decreases sharply. At this stage, a fetus is about 30 mm (1.2 inches) in length, the heartbeat is seen via ultrasound, and the fetus makes involuntary motions. During continued fetal development,
6144-549: Is the practice of ending intercourse ("pulling out") before ejaculation. The main risk of the withdrawal method is that the man may not perform the maneuver correctly or in a timely manner. First-year failure rates vary from 4% with perfect usage to 22% with typical usage. It is not considered birth control by some medical professionals. There is little data regarding the sperm content of pre-ejaculatory fluid . While some tentative research did not find sperm, one trial found sperm present in 10 out of 27 volunteers. The withdrawal method
6272-469: Is the time during which one or more offspring develops ( gestates ) inside a woman 's uterus (womb). A multiple pregnancy involves more than one offspring, such as with twins . Pregnancy usually occurs by sexual intercourse , but can also occur through assisted reproductive technology procedures. A pregnancy may end in a live birth , a miscarriage , an induced abortion , or a stillbirth . Childbirth typically occurs around 40 weeks from
6400-444: Is the total population minus people who cannot or choose not to work (children, retirees, soldiers, and incarcerated people). The noninstitutional civilian population is the number of people potentially available for civilian employment. Noninstitutional civilian population = Labour force + Out of the labour force = Employed + Unemployed + Out of
6528-634: Is unavoidable. However, spontaneous birth after 37 weeks is considered term and is not associated with the same risks of a preterm birth. Planned birth before 39 weeks by caesarean section or labor induction , although "at term", results in an increased risk of complications. This is from factors including underdeveloped lungs of newborns , infection due to underdeveloped immune system, feeding problems due to underdeveloped brain, and jaundice from underdeveloped liver. Babies born between 39 and 41 weeks' gestation have better outcomes than babies born either before or after this range. This special time period
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#17327840421436656-544: Is used as birth control by about 3% of couples. Sexual abstinence may be used as a form of birth control, meaning either not engaging in any type of sexual activity, or specifically not engaging in vaginal intercourse, while engaging in other forms of non-vaginal sex. Complete sexual abstinence is 100% effective in preventing pregnancy. However, among those who take a pledge to abstain from premarital sex , as many as 88% who engage in sex, do so prior to marriage. The choice to abstain from sex cannot protect against pregnancy as
6784-416: Is widely experienced as painful, some women do report painless labors, while others find that concentrating on the birth helps to quicken labor and lessen the sensations. Most births are successful vaginal births, but sometimes complications arise and a woman may undergo a cesarean section . During the time immediately after birth, both the mother and the baby are hormonally cued to bond, the mother through
6912-494: The Kahun Papyrus from 1850 BC have within them some of the earliest documented descriptions of birth control: the use of honey, acacia leaves and lint to be placed in the vagina to block sperm. Silphium , a species of giant fennel native to north Africa, may have been used as birth control in ancient Greece and the ancient Near East . Due to its desirability, by the first century AD, it had become so rare that it
7040-540: The US , European countries, and Japan ) to developing countries in Asia (such as China , Vietnam , and India ), Mexico and Central America . This is because companies search for the cheapest locations to manufacture and assemble components, so low-cost labor-intensive parts of the manufacturing process are shifted to the developing world where costs are substantially lower. But not only manufacturing processes are shifted to
7168-628: The anesthesia . Neither method offers protection from sexually transmitted infections. Sometimes, salpingectomy is also used for sterilization in women. Non-surgical sterilization methods have also been explored. Fahim et al. found that heat exposure, especially high-intensity ultrasound, was effective either for temporary or permanent contraception depending on the dose, e.g. selective destruction of germ cells and Sertoli cells without affecting Leydig cells or testosterone levels. Chemical, e.g. drug-based methods are also available, e.g. orally-administered Lonidamine for temporary, or permanent (depending on
7296-523: The fertilization age , which is the age of the embryo since conception. The American Congress of Obstetricians and Gynecologists recommends the following methods to calculate gestational age: Pregnancy is divided into three trimesters, each lasting for approximately three months. The exact length of each trimester can vary between sources. Due date estimation basically follows two steps: The American College of Obstetricians and Gynecologists divides full term into three divisions: Naegele's rule
7424-569: The lactational amenorrhea method (LAM), if adhered to strictly, can also have first-year (or for LAM, first-6-month) failure rates of less than 1%. With typical use, first-year failure rates are considerably higher, at 9%, due to inconsistent use. Other methods such as condoms, diaphragms, and spermicides have higher first-year failure rates even with perfect usage. The American Academy of Pediatrics recommends long acting reversible birth control as first line for young individuals. While all methods of birth control have some potential adverse effects,
7552-400: The progestogen-only pills (sometimes called minipills). If either is taken during pregnancy, they do not increase the risk of miscarriage nor cause birth defects . Both types of birth control pills prevent fertilization mainly by inhibiting ovulation and thickening cervical mucus. They may also change the lining of the uterus and thus decrease implantation. Their effectiveness depends on
7680-547: The service sector , while men focus on the industrial sector . Women usually work fewer hours in income generating jobs than men do. Often it is housework that is unpaid. Worldwide, women and girls are responsible for a great amount of household work. The Penguin Atlas of Women in the World, published in 2008, stated that in Madagascar, women spend 20 hours per week on housework, while men spend only two. In Mexico, women spend 33 hours and men spend 5 hours. In Mongolia
7808-405: The workforce , and/or less use of scarce resources. Birth control methods include barrier methods , hormonal birth control , intrauterine devices (IUDs), sterilization , and behavioral methods. They are used before or during sex while emergency contraceptives are effective for up to five days after sex. Effectiveness is generally expressed as the percentage of women who become pregnant using
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#17327840421437936-489: The "old" international division of labor, until around 1970, underdeveloped areas were incorporated into the world economy principally as suppliers of minerals and agricultural commodities. However, as developing economies are merged into the world economy, more production takes place in these economies. This has led to a trend of transference, or what is also known as the " global industrial shift ", in which production processes are relocated from developed countries (such as
8064-419: The United States where there is a declining population of American citizens working on farms — temporary or itinerant skilled labor from outside the country is recruited for labor-intensive crops like vegetables and fruits. Paid and unpaid work are also closely related with formal and informal labour. Some informal work is unpaid, or paid under the table. Unpaid work can be work that is done at home to sustain
8192-440: The United States, 60% of the women used birth control to some extent during the month pregnancy began. The usual signs and symptoms of pregnancy do not significantly interfere with activities of daily living or pose a health-threat to the mother or baby. However, pregnancy complications can cause other more severe symptoms, such as those associated with anemia . Common signs and symptoms of pregnancy include: (from
8320-406: The age of 30. By contrast, less than 5% of men are likely to regret sterilization. Men who are more likely to regret sterilization are younger, have young or no children, or have an unstable marriage. In a survey of biological parents, 9% stated they would not have had children if they were able to do it over again. Although sterilization is considered a permanent procedure, it is possible to attempt
8448-465: The age of onset of sexual activity or its frequency. In Japan, about 80% of couples who are using birth control use condoms, while in Germany this number is about 25%, and in the United States it is 18%. Male condoms and the diaphragm with spermicide have typical use first-year failure rates of 18% and 12%, respectively. With perfect use condoms are more effective with a 2% first-year failure rate versus
8576-861: The ages of 15 and 19 years old are unplanned. Comprehensive sex education and access to birth control are effective in decreasing pregnancy rates in this age group. Birth control methods, especially hormonal methods , can also have undesirable side effects. Intensity of side effects can range from minor to debilitating, and varies with individual experiences. These most commonly include change in menstruation regularity and flow, nausea, breast tenderness, headaches, weight gain, and mood changes (specifically an increase in depression and anxiety). Additionally, hormonal contraception can contribute to bone mineral density loss, impaired glucose metabolism, increased risk of venous thromboembolism. Comprehensive sex education and transparent discussion of birth control side effects and contraindications between healthcare provider and patient
8704-443: The chances of becoming pregnant while breastfeeding. In those who are exclusively breastfeeding, about 10% begin having periods before three months and 20% before six months. In those who are not breastfeeding, fertility may return as early as four weeks after delivery. Emergency contraceptive methods are medications (sometimes misleadingly referred to as "morning-after pills") or devices used after unprotected sexual intercourse with
8832-413: The delivery of a child, a woman who is not exclusively breastfeeding may become pregnant again after as few as four to six weeks. Some methods of birth control can be started immediately following the birth, while others require a delay of up to six months. In women who are breastfeeding, progestin-only methods are preferred over combined oral birth control pills . In women who have reached menopause , it
8960-522: The developed world is condoms and oral contraceptives, while in Africa it is oral contraceptives and in Latin America and Asia it is sterilization. In the developing world overall, 35% of birth control is via female sterilization, 30% is via IUDs, 12% is via oral contraceptives, 11% is via condoms, and 4% is via male sterilization. While less used in the developed countries than the developing world,
9088-573: The developing world are employed in the informal sector. The specific percentages are 84% and 58% for women in Sub-Saharan Africa and Latin America respectively. The percentages for men in both of these areas of the world are lower, amounting to 63% and 48% respectively. In Asia, 65% of women workers and 65% of men workers are employed in the informal sector. Globally, a large percentage of women that are formally employed also work in
9216-403: The developing world. The growth of offshore outsourcing of IT-enabled services (such as offshore custom software development and business process outsourcing ) is linked to the availability of large amounts of reliable and affordable communication infrastructure following the telecommunication and Internet expansion of the late 1990s. [REDACTED] This article incorporates text from
9344-604: The dose) fertility management. Boris provides a method for chemically inducing either temporary or non-reversible sterility, depending on the dose, "Permanent sterility in human males can be obtained by a single oral dosage containing from about 18 mg/kg to about 25 mg/kg". The permanence of this decision may cause regret in some men and women. Of women who have undergone tubal ligation after the age of 30, about 6% regret their decision, as compared with 20–24% of women who received sterilization within one year of delivery and before turning 30, and 6% in nulliparous women sterilized before
9472-426: The early body systems, and structures that were established in the embryonic stage continue to develop. Sex organs begin to appear during the third month of gestation. The fetus continues to grow in both weight and length, although the majority of the physical growth occurs in the last weeks of pregnancy. Electrical brain activity is first detected at the end of week 5 of gestation, but as in brain-dead patients, it
9600-407: The egg cell, which has been released from one of the female's two ovaries , unite in one of the two fallopian tubes . The fertilized egg, known as a zygote , then moves toward the uterus, a journey that can take up to a week to complete. Cell division begins approximately 24 to 36 hours after the female and male cells unite. Cell division continues at a rapid rate and the cells then develop into what
9728-434: The end of the embryonic stage, the beginnings of features such as fingers, eyes, mouth, and ears become visible. Also during this time, there is development of structures important to the support of the embryo, including the placenta and umbilical cord . The placenta connects the developing embryo to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. The umbilical cord
9856-450: The enlarged uterus may impede blood flow by compressing the vena cava when lying flat, a condition that can be relieved by lying on the left side. Childbirth, referred to as labor and delivery in the medical field, is the process whereby an infant is born. A woman is considered to be in labor when she begins experiencing regular uterine contractions, accompanied by changes of her cervix—primarily effacement and dilation. While childbirth
9984-645: The female gamete . Fertilization is the event where the egg cell fuses with the male gamete, spermatozoon . After the point of fertilization, the fused product of the female and male gamete is referred to as a zygote or fertilized egg. The fusion of female and male gametes usually occurs following the act of sexual intercourse . Pregnancy rates for sexual intercourse are highest during the menstrual cycle time from some 5 days before until 1 to 2 days after ovulation. Fertilization can also occur by assisted reproductive technology such as artificial insemination and in vitro fertilisation . Fertilization (conception)
10112-470: The fetus begins to move during the first trimester, it is not until the second trimester that movement, known as quickening , can be felt. This typically happens in the fourth month, more specifically in the 20th to 21st week, or by the 19th week if the woman has been pregnant before. It is common for some women not to feel the fetus move until much later. During the second trimester, when the body size changes, maternity clothes may be worn. During pregnancy,
10240-549: The fetus increases significantly. Therefore, in an otherwise uncomplicated pregnancy, obstetricians usually prefer to induce labor at some stage between 41 and 42 weeks. The postpartum period also referred to as the puerperium , is the postnatal period that begins immediately after delivery and extends for about six weeks. During this period, the mother's body begins the return to pre-pregnancy conditions that includes changes in hormone levels and uterus size. The beginning of pregnancy may be detected either based on symptoms by
10368-478: The first seven weeks following implantation (i.e. ten weeks' gestational age), after which the term fetus is used until birth. Signs and symptoms of early pregnancy may include missed periods , tender breasts, morning sickness (nausea and vomiting), hunger, implantation bleeding , and frequent urination. Pregnancy may be confirmed with a pregnancy test . Methods of birth control —or, more accurately, contraception —are used to avoid pregnancy. Pregnancy
10496-566: The first trimester, minute ventilation increases by 40 percent. The womb will grow to the size of a lemon by eight weeks. Many symptoms and discomforts of pregnancy , such as nausea and tender breasts , appear in the first trimester. During the second trimester, most women feel more energized and put on weight as the symptoms of morning sickness subside. They begin to feel regular fetal movements , which can become strong and even disruptive. Braxton Hicks contractions are sporadic uterine contractions that may start around six weeks into
10624-510: The first year depend on whether or not a woman has previously given birth, being 24% in those who have and 12% in those who have not. The sponge can be inserted up to 24 hours before intercourse and must be left in place for at least six hours afterward. Allergic reactions and more severe adverse effects such as toxic shock syndrome have been reported. The current intrauterine devices (IUD) are small devices, often T-shaped, containing either copper or levonorgestrel , which are inserted into
10752-450: The full demand for birth control were met. By lengthening the time between pregnancies, birth control can improve adult women's delivery outcomes and the survival of their children. In the developing world, women's earnings, assets, and weight, as well as their children's schooling and health, all improve with greater access to birth control. Birth control increases economic growth because of fewer dependent children, more women participating in
10880-424: The full demand for birth control were met. These benefits are achieved by reducing the number of unplanned pregnancies that subsequently result in unsafe abortions and by preventing pregnancies in those at high risk. Birth control also improves child survival in the developing world by lengthening the time between pregnancies. In this population, outcomes are worse when a mother gets pregnant within eighteen months of
11008-523: The global workforce grew from 1.2 to 2.9 billion people. According to a 2012 report by the McKinsey Global Institute, this was caused mostly by developing nations, where there was a "farm to factory" transition. Non-farming jobs grew from 54 percent in 1980 to almost 73 percent in 2010. This industrialization took an estimated 620 million people out of poverty and contributed to the economic development of China, India and others. Under
11136-608: The hope of preventing pregnancy. Emergency contraceptives are often given to victims of rape. They work primarily by preventing ovulation or fertilization. They are unlikely to affect implantation, but this has not been completely excluded. A number of options exist, including high dose birth control pills , levonorgestrel , mifepristone , ulipristal and IUDs. All methods have minimal side effects. Providing emergency contraceptive pills to women in advance of sexual activity does not affect rates of sexually transmitted infections, condom use, pregnancy rates, or sexual risk-taking behavior. In
11264-472: The housework hours amount to 27 and 12 for women and men respectively. In Spain, women spend 26 hours on housework and men spend 4 hours. Only in the Netherlands do men spend 10% more time than women do on activities within the home or for the household. The Penguin Atlas of Women in the World also stated that in developing countries, women and girls spend a significant amount of time fetching water for
11392-496: The ideal childbirth, labor begins on its own "at term". Babies born before 37 weeks are " preterm " and at higher risk of health problems such as cerebral palsy . Babies born between weeks 37 and 39 are considered "early term" while those born between weeks 39 and 41 are considered "full term". Babies born between weeks 41 and 42 weeks are considered "late-term" while after 42 weeks they are considered " post-term ". Delivery before 39 weeks by labor induction or caesarean section
11520-538: The increased risk, they are included in decision tools such as the DASH score and PERC rule used to predict the risk of blood clots. The effect on sexual drive is varied, with increase or decrease in some but with no effect in most. Combined oral contraceptives reduce the risk of ovarian cancer and endometrial cancer and do not change the risk of breast cancer. They often reduce menstrual bleeding and painful menstruation cramps . The lower doses of estrogen released from
11648-792: The infant's size and state of development rather than to the stage of pregnancy. About 213 million pregnancies occurred in 2012, of which, 190 million (89%) were in the developing world and 23 million (11%) were in the developed world. The number of pregnancies in women aged between 15 and 44 is 133 per 1,000 women. About 10% to 15% of recognized pregnancies end in miscarriage . In 2016, complications of pregnancy resulted in 230,600 maternal deaths , down from 377,000 deaths in 1990. Common causes include bleeding , infections , hypertensive diseases of pregnancy , obstructed labor , miscarriage, abortion, or ectopic pregnancy . Globally, 44% of pregnancies are unplanned . Over half (56%) of unplanned pregnancies are aborted. Among unintended pregnancies in
11776-443: The infant, and the baby is younger than six months. If breastfeeding is the infant's only source of nutrition and the baby is less than 6 months old, 93–99% of women are estimated to have protection from becoming pregnant in the first six months (0.75–7.5% failure rate). The failure rate increases to 4–7% at one year and 13% at two years. Feeding formula, pumping instead of nursing, the use of a pacifier , and feeding solids all increase
11904-685: The informal sector behind the scenes. These women make up the hidden work force. According to a 2021 FAO study, currently, 85 per cent of economic activity in Africa is conducted in the informal sector where women account for nearly 90 per cent of the informal labour force. According to the ILO 's 2016 employment analysis, 64 per cent of informal employment is in agriculture (relative to industry and services) in sub-Saharan Africa. Women have higher rates of informal employment than men with 92 per cent of women workers in informal employment versus 86 per cent of men. Formal and informal labour can be divided into
12032-487: The injectable version should be used. Progestin-only pills may improve menstrual symptoms and can be used by breastfeeding women as they do not affect milk production . Irregular bleeding may occur with progestin-only methods, with some users reporting no periods . The progestins drospirenone and desogestrel minimize the androgenic side effects but increase the risks of blood clots and are thus not first line. The perfect use first-year failure rate of injectable progestin
12160-463: The labour force = Total Population − People who can not work {\displaystyle {\begin{aligned}{\text{Noninstitutional civilian population}}&={\text{Labour force}}+{\text{Out of the labour force}}\\&={\text{Employed}}+{\text{Unemployed}}+{\text{Out of the labour force}}\\&={\text{Total Population}}-{\text{People who can not work}}\end{aligned}}} The labour force participation rate
12288-432: The labour force . The sum of the labour force and out of the labour force results in the noninstitutional civilian population , that is, the number of people who (1) work (i.e., the employed), (2) can work but don't, although they are looking for a job (i.e., the unemployed), or (3) can work but don't, and are not looking for a job (i.e., out of the labour force). Stated otherwise, the noninstitutional civilian population
12416-533: The longer the time period between the vasectomy and the reversal. Sperm extraction followed by in vitro fertilization may also be an option in men. Behavioral methods involve regulating the timing or method of intercourse to prevent introduction of sperm into the female reproductive tract, either altogether or when an egg may be present. If used perfectly the first-year failure rate may be around 3.4%; however, if used poorly first-year failure rates may approach 85%. Fertility awareness methods involve determining
12544-515: The male before ejaculation . Sterilization, while highly effective, is not usually reversible; all other methods are reversible, most immediately upon stopping them. Safe sex practices, such as with the use of condoms or female condoms , can also help prevent sexually transmitted infections . Other methods of birth control do not protect against sexually transmitted infections. Emergency birth control can prevent pregnancy if taken within 72 to 120 hours after unprotected sex. Some argue not having sex
12672-412: The most effective form of emergency contraceptive. In those who are overweight or obese , levonorgestrel is less effective and an IUD or ulipristal is recommended. Dual protection is the use of methods that prevent both sexually transmitted infections and pregnancy. This can be with condoms either alone or along with another birth control method or by the avoidance of penetrative sex . If pregnancy
12800-418: The most fertile days of the menstrual cycle and avoiding unprotected intercourse. Techniques for determining fertility include monitoring basal body temperature , cervical secretions , or the day of the cycle. They have typical first-year failure rates of 24%; perfect use first-year failure rates depend on which method is used and range from 0.4% to 5%. The evidence on which these estimates are based, however,
12928-553: The most important sources of livelihood for women. Women are estimated to account for approximately 70 per cent of informal cross-border traders and are also prevalent among owners of micro, small, or medium-sized enterprises (MSMEs). MSMEs are more vulnerable to market shocks and market disruptions. For women-owned MSMEs this is often compounded by their lack of access to credit and financial liquidity compared to larger businesses. However, MSMEs are often more vulnerable to market shocks and market disruptions. For women-owned MSMEs, this
13056-773: The most widely used form of reversible contraception, with more than 180 million users worldwide. Evidence supports effectiveness and safety in adolescents and those who have and have not previously had children. IUDs do not affect breastfeeding and can be inserted immediately after delivery. They may also be used immediately after an abortion. Once removed, even after long term use, fertility returns to normal immediately. While copper IUDs may increase menstrual bleeding and result in more painful cramps, hormonal IUDs may reduce menstrual bleeding or stop menstruation altogether. Cramping can be treated with painkillers like non-steroidal anti-inflammatory drugs . Other potential complications include expulsion (2–5%) and rarely perforation of
13184-470: The mother during their first two hours after birth, the period that they tend to be more alert than in the following hours of early life. In the ideal childbirth , labor begins on its own when a woman is "at term". Events before completion of 37 weeks are considered preterm. Preterm birth is associated with a range of complications and should be avoided if possible. Sometimes if a woman's water breaks or she has contractions before 39 weeks, birth
13312-441: The muscular organ that holds the developing fetus, can expand up to 20 times its normal size during pregnancy. Head engagement , also called "lightening" or "dropping", occurs as the fetal head descends into a cephalic presentation . While it relieves pressure on the upper abdomen and gives a renewed ease in breathing, it also severely reduces bladder capacity, resulting in a need to void more frequently , and increases pressure on
13440-547: The new jobs in Latin America. That same year, informal labour made up 78% of non-agricultural employment, 61% of urban employment, and 93% of the new jobs in Africa. Particularly after an economic crisis, labourers tend to shift from the formal sector to the informal sector. This trend was seen after the Asian economic crisis which began in 1997. Gender is frequently associated with informal labour. Women are employed more often informally than they are formally, and informal labour
13568-880: The number of women using IUDs as of 2007 was more than 180 million. Avoiding sex when fertile is used by about 3.6% of women of childbearing age, with usage as high as 20% in areas of South America. As of 2005, 12% of couples are using a male form of birth control (either condoms or a vasectomy) with higher rates in the developed world. Usage of male forms of birth control has decreased between 1985 and 2009. Contraceptive use among women in Sub-Saharan Africa has risen from about 5% in 1991 to about 30% in 2006. As of 2012, 57% of women of childbearing age want to avoid pregnancy (867 of 1,520 million). About 222 million women, however, were not able to access birth control, 53 million of whom were in sub-Saharan Africa and 97 million of whom were in Asia. This results in 54 million unplanned pregnancies and nearly 80,000 maternal deaths
13696-416: The pelvic floor and the rectum. It is not possible to predict when lightening will occur. In a first pregnancy it may happen a few weeks before the due date, though it may happen later or even not until labor begins, as is typical with subsequent pregnancies. It is during the third trimester that maternal activity and sleep positions may affect fetal development due to restricted blood flow . For instance,
13824-464: The penis exiting from anal intercourse ) where sperm can be deposited near the entrance to the vagina and can travel along the vagina's lubricating fluids. Abstinence-only sex education does not reduce teenage pregnancy . Teen pregnancy rates and STI rates are generally the same or higher in states where students are given abstinence-only education, as compared with comprehensive sex education . Some authorities recommend that those using abstinence as
13952-684: The physical changes. This condition is known as a false pregnancy . Most pregnant women experience a number of symptoms, which can signify pregnancy. A number of early medical signs are associated with pregnancy. These signs include: Pregnancy detection can be accomplished using one or more various pregnancy tests , which detect hormones generated by the newly formed placenta , serving as biomarkers of pregnancy. Blood and urine tests can detect pregnancy by 11 and 14 days, respectively, after fertilization. Blood pregnancy tests are more sensitive than urine tests (giving fewer false negatives). Home pregnancy tests are urine tests, and normally detect
14080-400: The practice of accessing the lowest-cost workers from all parts of the world, is partly a result of this enormous growth in the workforce. While most of the absolute increase in this global labour supply consisted of less-educated workers (those without higher education), the relative supply of workers with higher education increased by about 50 percent during the same period. From 1980 to 2010,
14208-487: The release of oxytocin , a hormone also released during breastfeeding . Studies show that skin-to-skin contact between a mother and her newborn immediately after birth is beneficial for both the mother and baby. A review done by the World Health Organization found that skin-to-skin contact between mothers and babies after birth reduces crying, improves mother–infant interaction, and helps mothers to breastfeed successfully. They recommend that neonates be allowed to bond with
14336-463: The risk is less than that of pregnancy. After stopping or removing many methods of birth control, including oral contraceptives, IUDs, implants and injections, the rate of pregnancy during the subsequent year is the same as for those who used no birth control. For individuals with specific health problems, certain forms of birth control may require further investigations. For women who are otherwise healthy, many methods of birth control should not require
14464-451: The risk of breast , ovarian , and endometrial cancer , and the risk declines further with each additional full-term pregnancy. The fetus is genetically different from its mother and can therefore be viewed as an unusually successful allograft . The main reason for this success is increased immune tolerance during pregnancy, which prevents the mother's body from mounting an immune system response against certain triggers. During
14592-540: The ruins of Dudley Castle in England, and are dated back to 1640. They were made of animal gut, and were most likely used to prevent the spread of sexually transmitted infections during the English Civil War . Casanova , living in 18th-century Italy, described the use of a lambskin covering to prevent pregnancy; however, condoms only became widely available in the 20th century. Pregnancy Pregnancy
14720-621: The safety of birth control methods among women with specific medical conditions. The most effective methods of birth control are sterilization by means of vasectomy in males and tubal ligation in females, intrauterine devices (IUDs), and implantable birth control . This is followed by a number of hormone-based methods including contraceptive pills , patches , vaginal rings , and injections . Less effective methods include physical barriers such as condoms , diaphragms and birth control sponges and fertility awareness methods . The least effective methods are spermicides and withdrawal by
14848-402: The start of the last menstrual period (LMP), a span known as the gestational age . This is just over nine months. Counting by fertilization age , the length is about 38 weeks. Pregnancy is "the presence of an implanted human embryo or fetus in the uterus"; implantation occurs on average 8–9 days after fertilization. An embryo is the term for the developing offspring during
14976-491: The start of the last menstrual period ) The chronology of pregnancy is, unless otherwise specified, generally given as gestational age , where the starting point is the beginning of the woman's last menstrual period (LMP), or the corresponding age of the gestation as estimated by a more accurate method if available. This model means that the woman is counted as being "pregnant" two weeks before conception and three weeks before implantation . Sometimes, timing may also use
15104-705: The subcategories of agricultural work and non-agricultural work. Martha Chen et al. believe these four categories of labour are closely related to one another. A majority of agricultural work is informal, which the Penguin Atlas for Women in the World defines as unregistered or unstructured. Non-agricultural work can also be informal. According to Martha Chen et al. , informal labour makes up 48% of non-agricultural work in North Africa, 51% in Latin America, 65% in Asia, and 72% in Sub-Saharan Africa. Agriculture and informal economic activity are among some of
15232-502: The use of modern birth control, is one of the most cost-effective health interventions. For every dollar spent, the United Nations estimates that two to six dollars are saved. These cost savings are related to preventing unplanned pregnancies and decreasing the spread of sexually transmitted illnesses. While all methods are beneficial financially, the use of copper IUDs resulted in the greatest savings. The total medical cost for
15360-401: The user's adherence to taking the pills. Combined hormonal contraceptives are associated with a slightly increased risk of venous and arterial blood clots . Venous clots, on average, increase from 2.8 to 9.8 per 10,000 women years which is still less than that associated with pregnancy. Due to this risk, they are not recommended in women over 35 years of age who continue to smoke. Due to
15488-490: The uterus (less than 0.7%). A previous model of the intrauterine device (the Dalkon shield ) was associated with an increased risk of pelvic inflammatory disease ; however, the risk is not affected with current models in those without sexually transmitted infections around the time of insertion. IUDs appear to decrease the risk of ovarian cancer . Two broad categories exist, surgical and non-surgical. Surgical sterilization
15616-411: The uterus. They are one form of long-acting reversible contraception which are the most effective types of reversible birth control. Failure rates with the copper IUD is about 0.8% while the levonorgestrel IUD has a failure rates of 0.2% in the first year of use. Among types of birth control, they, along with birth control implants, result in the greatest satisfaction among users. As of 2007, IUDs are
15744-430: The vaginal ring may reduce the risk of breast tenderness, nausea , and headache associated with higher dose estrogen products. Progestin-only pills, injections and intrauterine devices are not associated with an increased risk of blood clots and may be used by women with a history of blood clots in their veins. In those with a history of arterial blood clots, non-hormonal birth control or a progestin-only method other than
15872-573: The week, while men do not. For example, in Malawi women spend 6.3 hours per week fetching water, while men spend 43 minutes. Girls in Malawi spend 3.3 hours per week fetching water, and boys spend 1.1 hours. Even if women and men both spend time on household work and other unpaid activities, this work is also gendered. In the United Kingdom in 2014, two-thirds of workers on long-term sick leave were women, despite women only constituting half of
16000-447: The woman herself, or by using pregnancy tests . However, an important condition with serious health implications that is quite common is the denial of pregnancy by the pregnant woman. About 1 in 475 denials will last until around the 20th week of pregnancy. The proportion of cases of denial, persisting until delivery is about 1 in 2500. Conversely, some non-pregnant women have a very strong belief that they are pregnant along with some of
16128-576: The workforce, even after excluding maternity leave. The global supply of labour almost doubled in absolute numbers between the 1980s and early 2000s, with half of that growth coming from Asia. At the same time, the rate at which new workers entered the workforce in the Western world began to decline. The growing pool of global labour is accessed by employers in more advanced economies through various methods, including imports of goods, offshoring of production, and immigration . Global labor arbitrage ,
16256-433: Was inconclusive. Workforce In macroeconomics, the workforce or labour force is the sum of those either working (i.e., the employed) or looking for work (i.e., the unemployed): Labour force = Employed + Unemployed {\displaystyle {\text{Labour force}}={\text{Employed}}+{\text{Unemployed}}} Those neither working in the marketplace nor looking for work are out of
16384-464: Was worth more than its weight in silver and, by late antiquity, it was fully extinct. Most methods of birth control used in antiquity were probably ineffective. The ancient Greek philosopher Aristotle ( c. 384–322 BC) recommended applying cedar oil to the womb before intercourse, a method which was probably only effective on occasion. A Hippocratic text On the Nature of Women recommended that
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