104-523: Indian Public Health Association shortly IPHA is a professional health organization working for the cause of Public Health in India since 1956. It is registered under Societies Registration Act XXI of 1860. IPHA helps Indian government to promote public health and secure Indian citizens with safe medical environment. It also serves the role of publishing science journals and inform medical knowledge to Indians. This article about an Indian company
208-466: A " toxic food environment ", where fat- and sugar-laden foods have taken precedence over healthy nutritious foods. In these developed countries, overnutrition can be prevented by choosing the right kind of food. More fast food is consumed per capita in the United States than in any other country. This mass consumption of fast food results from its affordability and accessibility. Fast food, which
312-460: A basic level of medical care and disease prevention. A major public health concern in developing countries is poor maternal and child health , exacerbated by malnutrition and poverty coupled with governments' reluctance in implementing public health policies. Developed nations are at greater risk of certain public health crises, including childhood obesity, although overweight populations in low- and middle-income countries are catching up. From
416-557: A basic level of medical care and disease prevention. As a result, a large majority of disease and mortality in developing countries results from and contributes to extreme poverty . For example, many African governments spend less than $ 100 USD per person per year on health care, while, in the United States, the federal government spent approximately $ 10,600 USD per capita in 2019. However, expenditures on health care should not be confused with spending on public health. Public health measures may not generally be considered "health care" in
520-651: A community. In the study by Ghattas et al. (2020), the probability of overnutrition is significantly higher in higher-income families than in disadvantaged families. High food prices is a major factor preventing low income households from getting nutritious food For example, Khan and Kraemer (2009) found that in Bangladesh , low socioeconomic status was associated with chronic malnutrition since it inhibited purchase of nutritious foods (like milk, meat, poultry, and fruits). Food shortages may also contribute to malnutritions in countries which lack technology. However, in
624-410: A component of preventive medicine and public health. It is implemented as part of primary care rather than a specialty in its own right. Valles argues that the term social medicine has a narrower and more biomedical focus than the term population health. The purpose of a public health intervention is to prevent and mitigate diseases, injuries , and other health conditions. The overall goal
728-441: A country's overall health care system. Many interventions of public health interest are delivered outside of health facilities , such as food safety surveillance, distribution of condoms and needle-exchange programs for the prevention of transmissible diseases. Public health requires Geographic Information Systems (GIS) because risk, vulnerability and exposure involve geographic aspects. A dilemma in public health ethics
832-668: A form of "health fascism" by a number of scholars, objectifying the individual with no considerations of emotional or social factors. When public health initiatives began to emerge in England in modern times (18th century onwards) there were three core strands of public health which were all related to statecraft: Supply of clean water and sanitation (for example London sewerage system ); control of infectious diseases (including vaccination and quarantine ); an evolving infrastructure of various sciences, e.g. statistics, microbiology, epidemiology, sciences of engineering. Great Britain
936-418: A global increase in food insecurity and hunger between 2011 and 2020. In 2015, 795 million people (about one in ten people on earth) had undernutrition. It is estimated that between 691 and 783 million people in the world faced hunger in 2022. According to UNICEF, 2.4 billion people were moderately or severely food insecure in 2022, 391 million more than in 2019. These increases are partially related to
1040-492: A group of undernourished children in a hospital in Mexico City , Mexico. They defined three categories of malnutrition: first, second, and third degree. The degree of malnutrition is calculated based on a child's body size compared to the median weight for their age. The risk of death increases with increasing degrees of malnutrition. An adaptation of Gomez's original classification is still used today. While it provides
1144-499: A handful of people or as large as a village or an entire city. The concept of health takes into account physical, psychological , and social well-being . As such, according to the World Health Organization , "health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". Public health is related to global health which is the health of populations in
SECTION 10
#17327726762391248-403: A lack of breastfeeding may contribute to undernourishment. Anorexia nervosa and bariatric surgery can also cause malnutrition. Undernutrition due to lack of adequate breastfeeding is associated with the deaths of an estimated one million children annually. Illegal advertising of breast-milk substitutes contributed to malnutrition and continued three decades after its 1981 prohibition under
1352-422: A lack of education about proper nutrition, only having access to a single food source, or from poor healthcare access and unhealthy environments. It is not just the total amount of calories that matters but specific nutritional deficiencies such as vitamin A deficiency, iron deficiency or zinc deficiency can also increase risk of death. Overnutrition caused by overeating is also a form of malnutrition. In
1456-463: A million avoidable child deaths each year. Intermittent preventive therapy aimed at treating and preventing malaria episodes among pregnant women and young children is one public health measure in endemic countries. Since the 1980s, the growing field of population health has broadened the focus of public health from individual behaviors and risk factors to population-level issues such as inequality , poverty, and education. Modern public health
1560-612: A nation's development." Among those affected, very few people experience the most visible and severe effects: disabling goiters , cretinism and dwarfism . These effects occur most commonly in mountain villages. However, 16 percent of the world's people have at least mild goiter (a swollen thyroid gland in the neck)." Social conditions have a significant influence on the health of people. The social determinants of undernutrition mainly include poor education, poverty, disease burden and lack of women's empowerment. Identifying and addressing these determinants can eliminate undernutrition in
1664-600: A new classification system for malnutrition. Instead of using just weight for age measurements, Waterlow's system combines weight-for-height (indicating acute episodes of malnutrition) with height-for-age to show the stunting that results from chronic malnutrition. One advantage of the Waterlow classification is that weight for height can be calculated even if a child's age is unknown. The World Health Organization frequently uses these classifications of malnutrition, with some modifications. Undernutrition weakens every part of
1768-877: A result of micronutrient deficiencies. It adversely affects physical and mental functioning, and causes changes in body composition and body cell mass. Undernutrition is a major health problem, causing the highest mortality rate in children, particularly in those under 5 years, and is responsible for long-lasting physiologic effects. It is a barrier to the complete physical and mental development of children. Undernutrition can manifest as stunting, wasting, and underweight. If undernutrition occurs during pregnancy, or before two years of age, it may result in permanent problems with physical and mental development. Extreme undernutrition can cause starvation , chronic hunger, Severe Acute Malnutrition (SAM), and/or Moderate Acute Malnutrition (MAM). The signs and symptoms of micronutrient deficiencies depend on which micronutrient
1872-407: A review of research on what local authorities can do to tackle obesity. The review covers interventions in the food environment (what people buy and eat), the built and natural environments , schools, and the community, as well as those focussing on active travel , leisure services and public sports, weight management programmes , and system-wide approaches . Health inequalities, driven by
1976-509: A series of publications on this topic in the late 1980s and early 1990s criticizing the UK's the Health of The Nation campaign. These publications exposed abuse of epidemiology and statistics by the public health movement to support lifestyle interventions and screening programs. A combination of inculcating a fear of ill-health and a strong notion of individual responsibility has been criticized as
2080-496: A significant increase after World War II as concerns over the spread of disease as a result of globalization increased and the HIV/AIDS epidemic in sub-Saharan Africa surfaced. From 1990 to 2010, total health aid from developed countries increased from 5.5 billion to 26.87 billion with wealthy countries continuously donating billions of dollars every year with the goal of improving population health. Some efforts, however, receive
2184-475: A significantly larger proportion of funds such as HIV which received an increase in funds of over $ 6 billion between 2000 and 2010 which was more than twice the increase seen in any other sector during those years. Health aid has seen an expansion through multiple channels including private philanthropy, non-governmental organizations , private foundations such as the Rockefeller Foundation or
SECTION 20
#17327726762392288-412: A sustained diet that is deficient in both protein and energy. This causes their metabolism to adapt to prolong survival. The primary symptoms are severe wasting, leaving little or no edema ; minimal subcutaneous fat ; and abnormal serum albumin levels. It is traditionally seen in cases of famine , significant food restriction, or severe anorexia . Conditions are characterized by extreme wasting of
2392-437: A very dry mouth; decreased urine output and/or dark urine; increased heart rate with decreasing blood pressure; and altered mental status . Protein-calorie malnutrition can cause cognitive impairments . This most commonly occurs in people who were malnourished during a "critical period ... from the final third of gestation to the first 2 years of life". For example, in children under two years of age, iron deficiency anemia
2496-420: A way to compare malnutrition within and between populations, this classification system has been criticized for being " arbitrary " and for not considering overweight as a form of malnutrition. Also, height alone may not be the best indicator of malnutrition; children who are born prematurely may be considered short for their age even if they have good nutrition. In the 1970s, John Conrad Waterlow established
2600-399: Is a stub . You can help Misplaced Pages by expanding it . Public health Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the determinants of health of a population and the threats it faces is
2704-531: Is a fundamental part of population health. Scholars such as Coggon and Pielke express concerns about bringing general issues of wealth distribution into population health. Pielke worries about "stealth issue advocacy" in population health. Jung, Boris and Lushniak consider population health to be a concept that is the goal of an activity called public health practiced through the specialty preventive medicine. Lifestyle medicine uses individual lifestyle modification to prevent or revert disease and can be considered
2808-409: Is dealing with the conflict between individual rights and maximizing right to health . Public health is justified by consequentialist utilitarian ideas, but is constrained and critiqued by liberal , deontological , principlist and libertarian philosophies Stephen Holland argues that it can be easy to find a particular framework to justify any viewpoint on public health issues, but that
2912-451: Is due to the activation of an evolved reward system for substances such as drugs, tobacco, alcohol , refined salt , fat , and carbohydrates . New technologies such as modern transportation also cause reduced physical activity . Research has found that behavior is more effectively changed by taking evolutionary motivations into consideration instead of only presenting information about health effects. The marketing industry has long known
3016-505: Is estimated that nearly one in three persons globally has at least one form of malnutrition: wasting , stunting , vitamin or mineral deficiency, overweight, obesity, or diet-related noncommunicable diseases. Undernutrition is more common in developing countries . Stunting is more prevalent in urban slums than in rural areas. Studies on malnutrition have the population categorised into different groups including infants, under-five children, children, adolescents, pregnant women, adults and
3120-580: Is highest among children under five. In 2021, 148.1 million children under five years old were stunted, 45 million were wasted, and 37 million were overweight or obese. The same year, an estimated 45% of deaths in children were linked to undernutrition. As of 2020 , the prevalence of wasting among children under five in South Asia was reported to be 16% moderately or severely wasted. As of 2022 , UNICEF reported this prevalence as having slightly improved, but still being at 14.8%. In Asia, India has one of
3224-534: Is lacking. However, undernourished people are often thin and short, with very poor energy levels; and swelling in the legs and abdomen is also common. People who are undernourished often get infections and frequently feel cold. Micronutrient undernutrition results from insufficient intake of vitamins and minerals. Worldwide, deficiencies in iodine , Vitamin A , and iron are the most common. Children and pregnant women in low-income countries are at especially high risk for micronutrient deficiencies. Anemia
Indian Public Health Association - Misplaced Pages Continue
3328-403: Is likely to affect brain function acutely, and probably also chronically. Similarly, folate deficiency has been linked to neural tube defects . Iodine deficiency is "the most common preventable cause of mental impairment worldwide." "Even moderate [iodine] deficiency, especially in pregnant women and infants , lowers intelligence by 10 to 15 I.Q. points , shaving incalculable potential off
3432-465: Is limited. Public health programs providing vaccinations have made major progress in promoting health, including substantially reducing the occurrence of cholera and polio and eradicating smallpox , diseases that have plagued humanity for thousands of years. The World Health Organization (WHO) identifies core functions of public health programs including: In particular, public health surveillance programs can: The "Truth" campaign, launched by
3536-493: Is low in cost and nutrition, is high in calories. Due to increasing urbanization and automation , people are living more sedentary lifestyles. These factors combine to make weight gain difficult to avoid. Overnutrition also occurs in developing countries. It has appeared in parts of developing countries where income is on the rise. It is also a problem in countries where hunger and poverty persist. Economic development, rapid urbanisation and shifting dietary patterns have increased
3640-666: Is most commonly caused by iron deficiency , but can also result from other micronutrient deficiencies and diseases. This condition can have major health consequences. It is possible to have overnutrition simultaneously with micronutrient deficiencies; this condition is termed the double burden of malnutrition . 'Undernutrition' sometimes refers specifically to protein–energy malnutrition (PEM). This condition involves both micronutrient deficiencies and an imbalance of protein intake and energy expenditure. It differs from calorie restriction in that calorie restriction may not result in negative health effects. Hypoalimentation (underfeeding)
3744-434: Is often concerned with addressing determinants of health across a population. There is a recognition that health is affected by many factors including class, race, income, educational status, region of residence, and social relationships ; these are known as " social determinants of health ". The upstream drivers such as environment, education, employment, income, food security, housing, social inclusion and many others effect
3848-406: Is one cause of undernutrition. Two forms of PEM are kwashiorkor and marasmus ; both commonly coexist. Kwashiorkor is primarily caused by inadequate protein intake. Its symptoms include edema , wasting, liver enlargement , hypoalbuminaemia , and steatosis ; the condition may also cause depigmentation of skin and hair. The disorder is further identified by a characteristic swelling of
3952-584: Is one of Europe's most labor-intensive industries. In late 2020, it accounted for more than 21 million employment in the European Union when combined with social work. According to the WHO , several countries began the COVID-19 pandemic with insufficient health and care professionals, inappropriate skill mixtures, and unequal geographical distributions. These issues were worsened by the pandemic, reiterating
4056-530: Is part of a country's overall healthcare system. Public health is implemented through the surveillance of cases and health indicators , and through the promotion of healthy behaviors . Common public health initiatives include promotion of hand-washing and breastfeeding , delivery of vaccinations , promoting ventilation and improved air quality both indoors and outdoors , suicide prevention , smoking cessation , obesity education , increasing healthcare accessibility and distribution of condoms to control
4160-487: Is poor maternal and child health, exacerbated by malnutrition and poverty. The WHO reports that a lack of exclusive breastfeeding during the first six months of life contributes to over a million avoidable child deaths each year. Public health surveillance has led to the identification and prioritization of many public health issues facing the world today, including HIV/AIDS , diabetes , waterborne diseases , zoonotic diseases , and antibiotic resistance leading to
4264-522: Is related to public health. The American Board of Preventive Medicine separates three categories of preventive medicine: aerospace health, occupational health , and public health and general preventative medicine. Jung, Boris and Lushniak argue that preventive medicine should be considered the medical specialty for public health but note that the American College of Preventive Medicine and American Board of Preventive Medicine do not prominently use
Indian Public Health Association - Misplaced Pages Continue
4368-540: Is the control of tobacco smoking . Many nations have implemented major initiatives to cut smoking, such as increased taxation and bans on smoking in some or all public places. Supporters argue by presenting evidence that smoking is one of the major killers, and that therefore governments have a duty to reduce the death rate, both through limiting passive (second-hand) smoking and by providing fewer opportunities for people to smoke. Opponents say that this undermines individual freedom and personal responsibility, and worry that
4472-1515: Is to improve the health of individuals and populations, and to increase life expectancy . Public health is a complex term, composed of many elements and different practices. It is a multi-faceted, interdisciplinary field. For example, epidemiology , biostatistics , social sciences and management of health services are all relevant. Other important sub-fields include environmental health , community health , behavioral health , health economics , public policy , mental health , health education , health politics , occupational safety , disability , gender issues in health, and sexual and reproductive health . Modern public health practice requires multidisciplinary teams of public health workers and professionals. Teams might include epidemiologists , biostatisticians , physician assistants , public health nurses , midwives , medical microbiologists , pharmacists , economists , sociologists , geneticists , data managers , environmental health officers ( public health inspectors ), bioethicists , gender experts, sexual and reproductive health specialists, physicians , and veterinarians . The elements and priorities of public health have evolved over time, and are continuing to evolve. Common public health initiatives include promotion of hand-washing and breastfeeding , delivery of vaccinations , suicide prevention , smoking cessation , obesity education , increasing healthcare accessibility and distribution of condoms to control
4576-514: The Bill & Melinda Gates Foundation , bilateral donors, and multilateral donors such as the World Bank or UNICEF . The result has been a sharp rise in uncoordinated and fragmented funding of an ever-increasing number of initiatives and projects. To promote better strategic cooperation and coordination between partners, particularly among bilateral development agencies and funding organizations,
4680-530: The Institute for Health Metrics and Evaluation and the World Health Organization has shown a link between international health aid in developing countries and a reduction in adult mortality rates. However, a 2014–2016 study suggests that a potential confounding variable for this outcome is the possibility that aid was directed at countries once they were already on track for improvement. That same study, however, also suggests that 1 billion dollars in health aid
4784-710: The Swedish International Development Cooperation Agency (Sida) spearheaded the establishment of ESSENCE, an initiative to facilitate dialogue between donors/funders, allowing them to identify synergies. ESSENCE brings together a wide range of funding agencies to coordinate funding efforts. In 2009 health aid from the OECD amounted to $ 12.47 billion which amounted to 11.4% of its total bilateral aid. In 2009, Multilateral donors were found to spend 15.3% of their total aid on bettering public healthcare. Debates exist questioning
4888-639: The United Nations hosting its first General Assembly Special Summit on the issue of non-communicable diseases in September 2011. There is a significant disparity in access to health care and public health initiatives between developed countries and developing countries , as well as within developing countries. In developing countries, public health infrastructures are still forming. There may not be enough trained health workers , monetary resources or, in some cases, sufficient knowledge to provide even
4992-496: The WHO International Code of Marketing Breast Milk Substitutes . Maternal malnutrition can also factor into the poor health or death of a baby. Over 800,000 neonatal deaths have occurred because of deficient growth of the fetus in the mother's womb . Deriving too much of one's diet from a single source, such as eating almost exclusively potato, maize or rice, can cause malnutrition. This may either be from
5096-480: The immune system . Protein and energy undernutrition increases susceptibility to infection; so do deficiencies of specific micronutrients (including iron, zinc , and vitamins). In communities or areas that lack access to safe drinking water , these additional health risks present a critical problem. Undernutrition plays a major role in the onset of active tuberculosis . It also raises the risk of HIV transmission from mother to child, and increases replication of
5200-536: The prevalence of moderate and severe wasting could increase by 14% due to COVID-19; coupled with reductions in nutrition and health services coverage, this could result in over 128,000 additional deaths among children under 5 in 2020 alone. Although COVID-19 is less severe in children than in adults, the risk of severe disease increases with undernutrition. Other major causes of hunger include manmade conflicts, climate changes , and economic downturns. Undernutrition can occur either due to protein-energy wasting or as
5304-447: The right to food , Jean Ziegler proposes that agricultural waste , such as corn cobs and banana leaves , should be used as fuel instead of crops. In some developing countries, overnutrition (in the form of obesity) is beginning to appear in the same communities where malnutrition occurs. Overnutrition increases with urbanisation, food commercialisation and technological developments and increases physical inactivity. Variations in
SECTION 50
#17327726762395408-599: The American Legacy Foundation in 2000. This campaign aimed to educate and discourage young people from smoking by exposing the tobacco industry's deceptive practices. Through a combination of powerful visuals, persuasive storytelling, and relatable messaging, the "Truth" campaign successfully reduced smoking rates among teenagers and young adults. Many health problems are due to maladaptive personal behaviors. From an evolutionary psychology perspective, over consumption of novel substances that are harmful
5512-511: The United States, more than half of all adults are now overweight—a condition that, like hunger, increases susceptibility to disease and disability, reduces worker productivity , and lowers life expectancy . Overeating is much more common in the United States, since most people have adequate access to food. Many parts of the world have access to a surplus of non-nutritious food. Increased sedentary lifestyles also contribute to overnutrition. Yale University psychologist Kelly Brownell calls this
5616-452: The age of five were overweight in 2014. Once considered a problem in high-income countries, it is now on the rise in low-income countries, especially in urban settings. Many public health programs are increasingly dedicating attention and resources to the issue of obesity, with objectives to address the underlying causes including healthy diet and physical exercise . The National Institute for Health and Care Research (NIHR) has published
5720-405: The authors opined that "The fact that type 2 diabetes, a largely preventable disorder, has reached epidemic proportion is a public health humiliation." The risk of type 2 diabetes is closely linked with the growing problem of obesity . The WHO's latest estimates as of June 2016 highlighted that globally approximately 1.9 billion adults were overweight in 2014, and 41 million children under
5824-869: The basis for public health. The public can be as small as a handful of people or as large as a village or an entire city; in the case of a pandemic it may encompass several continents. The concept of health takes into account physical, psychological , and social well-being , among other factors. Public health is an interdisciplinary field. For example, epidemiology , biostatistics , social sciences and management of health services are all relevant. Other important sub-fields include environmental health , community health , behavioral health , health economics , public policy , mental health , health education , health politics , occupational safety , disability , oral health , gender issues in health, and sexual and reproductive health . Public health, together with primary care , secondary care, and tertiary care ,
5928-422: The beginnings of human civilization , communities promoted health and fought disease at the population level. In complex , pre-industrialized societies , interventions designed to reduce health risks could be the initiative of different stakeholders, such as army generals, the clergy or rulers. Great Britain became a leader in the development of public health initiatives, beginning in the 19th century, due to
6032-553: The belly , and extremities which disguises the patient's undernourished condition. 'Kwashiorkor' means 'displaced child' and is derived from the Ga language of coastal Ghana in West Africa. It means "the sickness the baby gets when the next baby is born," as it often occurs when the older child is deprived of breastfeeding and weaned to a diet composed largely of carbohydrates. Marasmus (meaning 'to waste away') can result from
6136-408: The body's tissues and form. Malnutrition is a category of diseases that includes undernutrition and overnutrition . Undernutrition is a lack of nutrients, which can result in stunted growth , wasting , and underweight . A surplus of nutrients causes overnutrition, which can result in obesity . In some developing countries , overnutrition in the form of obesity is beginning to appear within
6240-472: The burden of disease and inequality faced by developing countries and lead to a healthier future. The links between the various sustainable development goals and public health are numerous and well established. Malnutrition Malnutrition occurs when an organism gets too few or too many nutrients , resulting in health problems. Specifically, it is a deficiency , excess, or imbalance of energy, protein and other nutrients which adversely affects
6344-458: The correct approach is to find a framework that best describes a situation and see what it implies about public health policy. The definition of health is vague and there are many conceptualizations. Public health practitioners definition of health can different markedly from members of the public or clinicians . This can mean that members of the public view the values behind public health interventions as alien which can cause resentment amongst
SECTION 60
#17327726762396448-528: The developing world, eighty percent of malnourished children live in countries that produce food surpluses, according to estimates from the Food and Agriculture Organization (FAO) . The economist Amartya Sen observes that, in recent decades, famine has always been a problem of food distribution , purchasing power , and/or poverty, since there has always been enough food for everyone in the world. There are also sociopolitical causes of malnutrition. For example,
6552-419: The distribution of health between and within populations and are often shaped by policy. A social gradient in health runs through society. The poorest generally have the worst health, but even the middle classes will generally have worse health outcomes than those of a higher social level. The new public health advocates for population-based policies that improve health in an equitable manner. The health sector
6656-404: The effects of chronic diseases as life expectancy increases, the poorer communities being heavily affected by both chronic and infectious diseases. Another major public health concern in the developing world is poor maternal and child health, exacerbated by malnutrition and poverty. The WHO reports that a lack of exclusive breastfeeding during the first six months of life contributes to over
6760-422: The efficacy of international health aid. Supporters of aid claim that health aid from wealthy countries is necessary in order for developing countries to escape the poverty trap . Opponents of health aid claim that international health aid actually disrupts developing countries' course of development, causes dependence on aid, and in many cases the aid fails to reach its recipients. For example, recently, health aid
6864-642: The elderly population. The use of different growth references in different studies leads to variances in the undernutrition prevalence reported in different studies. Some of the growth references used in studies include the National Center for Health Statistics (NCHS) growth charts, WHO reference 2007, Centers for Disease Control and Prevention (CDC) growth charts, National Health and Nutrition Examination Survey (NHANES), WHO reference 1995, Obesity Task Force (IOTF) criteria and Indian Academy of Pediatrics (IAP) growth charts. The prevalence of undernutrition
6968-515: The elderly, undernutrition is more commonly due to physical, psychological, and social factors, not a lack of food. Age-related reduced dietary intake due to chewing and swallowing problems, sensory decline, depression, imbalanced gut microbiome, poverty and loneliness are major contributors to undernutrition in the elderly population. Malnutrition is also attributed due to wrong diet plan adopted by people who aim to reduce their weight without medical practitioners or nutritionist advice. There has been
7072-760: The fact that it was the first modern urban nation worldwide. The public health initiatives that began to emerge initially focused on sanitation (for example, the Liverpool and London sewerage systems ), control of infectious diseases (including vaccination and quarantine ) and an evolving infrastructure of various sciences, e.g. statistics, microbiology, epidemiology, sciences of engineering. Public health has been defined as "the science and art of preventing disease ", prolonging life and improving quality of life through organized efforts and informed choices of society , organizations (public and private), communities and individuals . The public can be as small as
7176-448: The harmful and undesirable effects of tobacco smoking on other persons and imposing smoking bans in public places have been particularly effective in reducing tobacco smoking. Public libraries can also be beneficial tools for public health changes. They provide access to healthcare information, link people to healthcare services, and even can provide direct care in certain situations. As well as seeking to improve population health through
7280-698: The health status of individuals in the same society are associated with the societal structure and an individual's socioeconomic status which leads to income inequality, racism, educational differences and lack of opportunities. Infectious diseases which increase nutrient requirements, such as gastroenteritis , pneumonia , malaria , and measles , can cause malnutrition. So can some chronic illnesses, especially HIV/AIDS . Malnutrition can also result from abnormal nutrient loss due to diarrhea or chronic small bowel illnesses, like Crohn's disease or untreated coeliac disease . "Secondary malnutrition" can result from increased energy expenditure. In infants,
7384-635: The highest burden of wasting with over 20% wasted children. However, the burden of undernutrition among under-five children in African countries is much higher. A pooled analysis of the prevalence of chronic undernutrition among under-five children in East Africa was identified to be 33.3%. This prevalence of undernutrition among under-five children ranged from 21.9% in Kenya to 53% in Burundi. In Tanzania,
7488-796: The highest possible level of health". The WHO's broad mandate includes advocating for universal healthcare, monitoring public health risks, coordinating responses to health emergencies, and promoting human health and well-being. The WHO has played a leading role in several public health achievements, most notably the eradication of smallpox , the near- eradication of polio , and the development of an Ebola vaccine . Its current priorities include communicable diseases , particularly HIV/AIDS , Ebola , COVID-19 , malaria and tuberculosis ; non-communicable diseases such as heart disease and cancer; healthy diet , nutrition, and food security ; occupational health ; and substance abuse . Most countries have their own governmental public health agency, often called
7592-423: The immediate risk factors has become a major health priority. The recent evidence on the impact of diet-induced obesity in fathers and mothers around the time of conception is identified to negatively program the health outcomes of multiple generations. According to UNICEF, at least 1 in every 10 children under five is overweight in 33 countries. In 1956, Gómez and Galvan studied factors associated with death in
7696-446: The implementation of specific population-level interventions, public health contributes to medical care by identifying and assessing population needs for health care services, including: Some programs and policies associated with public health promotion and prevention can be controversial. One such example is programs focusing on the prevention of HIV transmission through safe sex campaigns and needle-exchange programs . Another
7800-495: The importance of associating products with high status and attractiveness to others. Films are increasingly being recognized as a public health tool, with the Harvard University 's T.H. Chan School of Public Health categorizing such films as "impact filmmaking." In fact, film festivals and competitions have been established to specifically promote films about health. Conversely, it has been argued that emphasizing
7904-441: The importance of public health programs in reducing the incidence of disease, disability, and the effects of aging and other physical and mental health conditions. However, public health generally receives significantly less government funding compared with medicine. Although the collaboration of local health and government agencies is considered best practice to improve public health, the pieces of evidence available to support this
8008-477: The importance of public health. In the United States, a history of underinvestment in public health undermined the public health workforce and support for population health, long before the pandemic added to stress, mental distress, job dissatisfaction, and accelerated departures among public health workers. Health aid to developing countries is an important source of public health funding for many developing countries. Health aid to developing countries has shown
8112-430: The long term. Identification of the social conditions that causes malnutrition in children under five has received significant research attention as it is a major public health problem. Undernutrition most commonly results from a lack of access to high-quality, nutritious food. The household income is a socio-economic variable that influences the access to nutritious food and the probability of under and overnutrition in
8216-944: The ministry of health, with responsibility for domestic health issues. For example, in the United States , state and local health departments are on the front line of public health initiatives. In addition to their national duties, the United States Public Health Service (PHS), led by the Surgeon General of the United States Public Health Service , and the Centers for Disease Control and Prevention , headquartered in Atlanta , are also involved with international health activities. Most governments recognize
8320-482: The muscles and a gaunt expression. Excessive consumption of energy-dense foods and drinks and limited physical activity causes overnutrition. It causes overweight, defined as a body mass index (BMI) of 25 or more, and can lead to obesity (a BMI of 30 or more). Obesity has become a major health issue worldwide. Overnutrition is linked to chronic non-communicable diseases like diabetes , certain cancers, and cardiovascular diseases . Hence identifying and addressing
8424-539: The needs of the normative group. Identifying bias within public health research and practice is essential to ensuring public health efforts mitigate and don't aggravate health inequities. The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution, which establishes the agency's governing structure and principles, states its main objective as "the attainment by all peoples of
8528-471: The ongoing COVID-19 pandemic , which continues to highlight the weaknesses of current food and health systems. It has contributed to food insecurity , increasing hunger worldwide; meanwhile, lower physical activity during lockdowns has contributed to increases in overweight and obesity. In 2020, experts estimated that by the end of the year, the pandemic could have double the number of people at risk of suffering acute hunger. Similarly, experts estimated that
8632-602: The population of a community might be at increased risk for malnutrition if government is poor and the area lacks health-related services. On a smaller scale, certain households or individuals may be at an even higher risk due to differences in income levels , access to land, or levels of education. Community plays a crucial role in addressing the social causes of malnutrition. For example, communities with high social support and knowledge sharing about social protection programs can enable better public service demands. Better public service demands and social protection programs minimise
8736-452: The prevalence of infectious diseases decreased through the 20th century , public health began to put more focus on chronic diseases such as cancer and heart disease . Previous efforts in many developed countries had already led to dramatic reductions in the infant mortality rate using preventive methods. In Britain, the infant mortality rate fell from over 15% in 1870 to 7% by 1930. A major public health concern in developing countries
8840-566: The prevalence of stunting, among children under five varied from 41% in lowland and 64.5% in highland areas. Undernutrition by underweight and wasting was 11.5% and 2.5% in lowland and 22.% and 1.4% in the highland areas of Tanzania respectively. In South Sudan, the prevalence of undernutrition explained by stunting, underweight and wasting in under-five children were 23.8%, 4.8% and 2.3% respectively. In 28 countries, at least 30% of children were still affected by stunting in 2022. Vitamin A deficiency affects one third of children under age 5 around
8944-484: The public towards certain interventions. Such vagueness can be a problem for health promotion . Critics have argued that public health tends to place more focus on individual factors associated with health at the expense of factors operating at the population level. Historically, public health campaigns have been criticized as a form of " healthism ", as moralistic in nature rather than being focused on health. Medical doctors, Petr Shkrabanek and James McCormick wrote
9048-476: The reemergence of infectious diseases such as tuberculosis . Antibiotic resistance , also known as drug resistance, was the theme of World Health Day 2011 . For example, the WHO reports that at least 220 million people worldwide have diabetes. Its incidence is increasing rapidly, and it is projected that the number of diabetes deaths will double by 2030. In a June 2010 editorial in the medical journal The Lancet ,
9152-455: The risk of malnutrition in these communities. It is argued that commodity speculators are increasing the cost of food. As the real-estate bubble in the United States was collapsing, it is said that trillions of dollars moved to invest in food and primary commodities, causing the 2007–2008 food price crisis . The use of biofuels as a replacement for traditional fuels raises the price of food. The United Nations special rapporteur on
9256-759: The same communities as undernutrition. Most clinical studies use the term 'malnutrition' to refer to undernutrition. However, the use of 'malnutrition' instead of 'undernutrition' makes it impossible to distinguish between undernutrition and overnutrition, a less acknowledged form of malnutrition. Accordingly, a 2019 report by The Lancet Commission suggested expanding the definition of malnutrition to include "all its forms, including obesity, undernutrition, and other dietary risks." The World Health Organization and The Lancet Commission have also identified "[t]he double burden of malnutrition", which occurs from "the coexistence of overnutrition (overweight and obesity) alongside undernutrition (stunted growth and wasting)." It
9360-409: The simple act of handwashing with soap can prevent the spread of many contagious diseases . In other cases, treating a disease or controlling a pathogen can be vital to preventing its spread to others, either during an outbreak of infectious disease or through contamination of food or water supplies. Public health, together with primary care , secondary care, and tertiary care , is part of
9464-591: The social determinants of health, are also a growing area of concern in public health. A central challenge to securing health equity is that the same social structures that contribute to health inequities also operate and are reproduced by public health organizations. In other words, public health organizations have evolved to better meet the needs of some groups more than others. The result is often that those most in need of preventative interventions are least likely to receive them and interventions can actually aggravate inequities as they are often inadvertently tailored to
9568-409: The spread of sexually transmitted diseases . Public health aims are achieved through surveillance of cases and the promotion of healthy behaviors , communities and environments . Analyzing the determinants of health of a population and the threats it faces is the basis for public health. Many diseases are preventable through simple, nonmedical methods. For example, research has shown that
9672-438: The spread of sexually transmitted diseases . There is a significant disparity in access to health care and public health initiatives between developed countries and developing countries , as well as within developing countries. In developing countries, public health infrastructures are still forming. There may not be enough trained healthcare workers , monetary resources, or, in some cases, sufficient knowledge to provide even
9776-418: The state may be encouraged to remove more and more choice in the name of better population health overall. Psychological research confirms this tension between concerns about public health and concerns about personal liberty: (i) the best predictor of complying with public health recommendations such as hand-washing, mask-wearing, and staying at home (except for essential activity) during the COVID-19 pandemic
9880-511: The strictest sense. For example, mandating the use of seat belts in cars can save countless lives and contribute to the health of a population, but typically money spent enforcing this rule would not count as money spent on health care. Large parts of the world remained plagued by largely preventable or treatable infectious diseases. In addition to this however, many developing countries are also experiencing an epidemiological shift and polarization in which populations are now experiencing more of
9984-502: The term "public health". Preventive medicine specialists are trained as clinicians and address complex health needs of a population such as by assessing the need for disease prevention programs, using the best methods to implement them, and assessing their effectiveness. Since the 1990s many scholars in public health have been using the term population health . There are no medical specialties directly related to population health. Valles argues that consideration of health equity
10088-844: The virus . Undernutrition can cause vitamin-deficiency-related diseases like scurvy and rickets . As undernutrition worsens, those affected have less energy and experience impairment in brain functions. This can make it difficult (or impossible) for them to perform the tasks needed to acquire food, earn an income, or gain an education. Undernutrition can also cause acute problems, like hypoglycemia (low blood sugar ). This condition can cause lethargy, limpness, seizures , and loss of consciousness . Children are particularly at risk and can become hypoglycemic after 4 to 6 hours without food. Dehydration can also occur in malnourished people, and can be life-threatening, especially in babies and small children. There are many different signs of dehydration in undernourished people. These can include sunken eyes;
10192-420: The world – 42% – were unable to afford a healthy diet in 2021. Certain groups have higher rates of undernutrition, including elderly people and women (in particular while pregnant or breastfeeding children under five years of age). Undernutrition is an increasing health problem in people aged over 65 years, even in developed countries, especially among nursing home residents and in acute care hospitals. In
10296-472: The world, leading to 670,000 deaths and 250,000–500,000 cases of blindness . Vitamin A supplementation has been shown to reduce all-cause mortality by 12 to 24%. As of June 2021, 1.9 billion adults were overweight or obese, and 462 million adults were underweight. Globally, two billion people had iodine deficiency in 2017. In 2020, 900 million women and children had anemia, which is often caused by iron deficiency. More than 3.1 billion people in
10400-462: The worldwide context. It has been defined as "the area of study, research and practice that places a priority on improving health and achieving equity in " Health for all " people worldwide". International health is a field of health care, usually with a public health emphasis, dealing with health across regional or national boundaries. Public health is not the same as public healthcare ( publicly funded health care ). The term preventive medicine
10504-418: Was a leader in the development of public health during that time period out of necessity: Great Britain was the first modern urban nation (by 1851 more than half of the population lived in settlements of more than 2000 people). This led to a certain type of distress which then led to public health initiatives. Later that particular concern faded away. With the onset of the epidemiological transition and as
10608-894: Was associated with 364,000 fewer deaths occurring between ages 0 and 5 in 2011. To address current and future challenges in addressing health issues in the world, the United Nations have developed the Sustainable Development Goals to be completed by 2030. These goals in their entirety encompass the entire spectrum of development across nations, however Goals 1–6 directly address health disparities , primarily in developing countries. These six goals address key issues in global public health , poverty , hunger and food security , health, education, gender equality and women's empowerment , and water and sanitation . Public health officials can use these goals to set their own agenda and plan for smaller scale initiatives for their organizations. These goals are designed to lessen
10712-408: Was funneled towards initiatives such as financing new technologies like antiretroviral medication , insecticide-treated mosquito nets , and new vaccines. The positive impacts of these initiatives can be seen in the eradication of smallpox and polio ; however, critics claim that misuse or misplacement of funds may cause many of these efforts to never come into achievement. Economic modeling based on
10816-420: Was people's perceived duties to prevent harm but (ii) the best predictor of flouting such public health recommendations was valuing liberty more than equality. Simultaneously, while communicable diseases have historically ranged uppermost as a global health priority, non-communicable diseases and the underlying behavior-related risk factors have been at the bottom. This is changing, however, as illustrated by
#238761