Disability-adjusted life years ( DALYs ) are a measure of overall disease burden , expressed as the number of years lost due to ill-health, disability, or early death. It was developed in the 1990s as a way of comparing the overall health and life expectancy of different countries.
95-522: Halys may refer to: Health-adjusted life years (HALYs), a type of disability-adjusted life year which are used in attempts to quantify the burden of disease or disability in populations Halys River , a western name for the Kızılırmak River (Turkish: "Red River") in Anatolia Halys (bug) , a genus of stink bugs A taxonomic synonym for
190-428: A nomadic lifestyle. In addition, even a large area of land could not support many people without being actively farmed - food was difficult to come by and so groups were prevented from growing too large by the amount of food they could gather. Like contemporary hunter-gatherers, Paleolithic humans enjoyed an abundance of leisure time unparalleled in both Neolithic farming societies and modern industrial societies. At
285-489: A blind person is not considered to be ill. "In the GBD terminology, the term disability is used broadly to refer to departures from optimal health in any of the important domains of health." At the population level, the disease burden as measured by DALYs is calculated by adding YLL to YLD. YLL uses the life expectancy at the time of death. YLD is determined by the number of years disabled weighted by level of disability caused by
380-488: A disability or disease using the formula: In this formula, I = number of incident cases in the population, DW = disability weight of specific condition, and L = average duration of the case until remission or death (years). There is also a prevalence (as opposed to incidence) based calculation for YLD. Number of years lost due to premature death is calculated by where N = number of deaths due to condition, L = standard life expectancy at age of death. Life expectancies are not
475-694: A group of early humans, frequently called Homo heidelbergensis , came to Europe from Africa and eventually evolved into Homo neanderthalensis ( Neanderthals ). In the Middle Paleolithic, Neanderthals were present in the region now occupied by Poland. Both Homo erectus and Homo neanderthalensis became extinct by the start of the Upper Paleolithic. Descended from Homo sapiens , the anatomically modern Homo sapiens sapiens emerged in eastern Africa c. 300,000 BP, left Africa around 50,000 BP, and expanded throughout
570-793: A herd of animals at a waterhole so as to stun one of them. There are no indications of hafting , and some artifacts are far too large for that. Thus, a thrown hand axe would not usually have penetrated deeply enough to cause very serious injuries. Nevertheless, it could have been an effective weapon for defense against predators. Choppers and scrapers were likely used for skinning and butchering scavenged animals and sharp-ended sticks were often obtained for digging up edible roots. Presumably, early humans used wooden spears as early as 5 million years ago to hunt small animals, much as their relatives, chimpanzees , have been observed to do in Senegal , Africa. Lower Paleolithic humans constructed shelters, such as
665-462: A higher loss of DALYs (a greater burden of disease), than somebody disabled by the same disease or injury at the age of 70 for ten years. This age-weighting function is by no means a universal methodology in HALY studies, but is common when using DALYs. Cost-effectiveness studies using QALYs , for example, do not discount time at different ages differently. This age-weighting function applies only to
760-564: A marked increase in the diversity of artifacts occurred. In Africa, bone artifacts and the first art appear in the archaeological record. The first evidence of human fishing is also noted, from artifacts in places such as Blombos cave in South Africa . Archaeologists classify artifacts of the last 50,000 years into many different categories, such as projectile points , engraving tools, sharp knife blades, and drilling and piercing tools. Humankind gradually evolved from early members of
855-505: A need to distribute resources such as food and meat equally to avoid famine and ensure a stable food supply. Raymond C. Kelly speculates that the relative peacefulness of Middle and Upper Paleolithic societies resulted from a low population density, cooperative relationships between groups such as reciprocal exchange of commodities and collaboration on hunting expeditions, and because the invention of projectile weapons such as throwing spears provided less incentive for war, because they increased
950-540: A number of ways by modern archaeologists. The earliest explanation, by the prehistorian Abbe Breuil , interpreted the paintings as a form of magic designed to ensure a successful hunt. However, this hypothesis fails to explain the existence of animals such as saber-toothed cats and lions , which were not hunted for food, and the existence of half-human, half-animal beings in cave paintings. The anthropologist David Lewis-Williams has suggested that Paleolithic cave paintings were indications of shamanistic practices, because
1045-400: A person's ability to work, but rather on the effects of the disability on the person's life in general. Hence, mental illness is one of the leading diseases as measured by global burden of disease studies, with depression accounting for 51.84 million DALYs. Perinatal conditions, which affect infants with a very low age-weight function, are the leading cause of lost DALYs at 90.48 million. Measles
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#17327657110841140-531: A pronounced hierarchy and a somewhat formal division of labor ) and may have engaged in endemic warfare . Some argue that there was no formal leadership during the Middle and Upper Paleolithic. Like contemporary egalitarian hunter-gatherers such as the Mbuti pygmies, societies may have made decisions by communal consensus decision making rather than by appointing permanent rulers such as chiefs and monarchs . Nor
1235-558: A result of numerous discussions, by 2010 the World Health Organization had abandoned the ideas of age weighting and time discounting. They had also substituted the idea of prevalence for incidence (when a condition started) because this is what surveys measure. The methodology is not an economic measure. It measures how much healthy life is lost. It does not assign a monetary value to any person or condition, and it does not measure how much productive work or money
1330-476: A single, common metric. Disability-adjusted life years are a societal measure of the disease or disability burden in populations. DALYs are calculated by combining measures of life expectancy as well as the adjusted quality of life during a burdensome disease or disability for a population. DALYs are related to the quality-adjusted life year (QALY) measure; however, QALYs only measure the benefit with and without medical intervention and therefore do not measure
1425-516: A young adult are valued more highly than years spent as a young child or older adult, as these are years of peak productivity. Age-weighting receives considerable criticism for valuing young adults at the expense of children and the old. Some criticize, while others rationalize, this as reflecting society's interest in productivity and receiving a return on its investment in raising children. This age-weighting system means that somebody disabled at 30 years of age, for ten years, would be measured as having
1520-453: Is a general glacial excursion, termed a "glacial". Glacials are separated by "interglacials". During a glacial, the glacier experiences minor advances and retreats. The minor excursion is a "stadial"; times between stadials are "interstadials". Each glacial advance tied up huge volumes of water in continental ice sheets 1,500–3,000 m (4,900–9,800 ft ) deep, resulting in temporary sea level drops of 100 m (330 ft) or more over
1615-604: Is a period in human prehistory that is distinguished by the original development of stone tools , and which represents almost the entire period of human prehistoric technology . It extends from the earliest known use of stone tools by hominins , c. 3.3 million years ago, to the end of the Pleistocene , c. 11,650 cal BP . The Paleolithic Age in Europe preceded the Mesolithic Age , although
1710-489: Is different from Wikidata All article disambiguation pages All disambiguation pages Disability-adjusted life year DALYs have become more common in the field of public health and health impact assessment (HIA). They include not only the potential years of life lost due to premature death but also equivalent years of 'healthy' life lost by virtue of being in states of poor health or disability . In so doing, mortality and morbidity are combined into
1805-545: Is fifteenth at 23.11 million. Paleolithic Fertile Crescent : Europe : Africa : Siberia : The Paleolithic or Palaeolithic ( c. 3.3 million – c. 11,700 BC ) ( / ˌ p eɪ l i oʊ ˈ l ɪ θ ɪ k , ˌ p æ l i -/ PAY -lee-oh- LITH -ik, PAL -ee- ), also called the Old Stone Age (from Ancient Greek παλαιός ( palaiós ) 'old' and λίθος ( líthos ) 'stone'),
1900-464: Is lost as a result of death and disease. However, HALYs, including DALYs and QALYs, are especially useful in guiding the allocation of health resources as they provide a common numerator, allowing for the expression of utility in terms of dollar/DALY, or dollar/QALY. For example, in Gambia, provision of the pneumococcal conjugate vaccine costs $ 670 per DALY saved. Another example being Stroke, for which
1995-583: Is more pronounced in Lower Paleolithic humans such as Homo erectus than in modern humans, who are less polygynous than other primates, which suggests that Lower Paleolithic humans had a largely polygynous lifestyle, because species that have the most pronounced sexual dimorphism tend more likely to be polygynous. Human societies from the Paleolithic to the early Neolithic farming tribes lived without states and organized governments. For most of
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#17327657110842090-543: Is no evidence of hominins in America, Australia, or almost anywhere in Oceania during this time period. Fates of these early colonists, and their relationships to modern humans, are still subject to debate. According to current archaeological and genetic models, there were at least two notable expansion events subsequent to peopling of Eurasia c. 2,000,000 – c. 1,500,000 BP. Around 500,000 BP
2185-408: Is the age at which the year is lived and W {\displaystyle W} is the value assigned to it relative to an average value of 1. In these studies, future years were also discounted at a 3% rate to account for future health care losses. Time discounting , which is separate from the age-weighting function, describes preferences in time as used in economic models. The effects of
2280-506: The !Kung San who live similarly to their Paleolithic predecessors. The economy of a typical Paleolithic society was a hunter-gatherer economy. Humans hunted wild animals for meat and gathered food, firewood, and materials for their tools, clothes, or shelters. The population density was very low, around only 0.4 inhabitants per square kilometre (1/sq mi). This was most likely due to low body fat, infanticide , high levels of physical activity among women, late weaning of infants, and
2375-489: The Altai Mountains and Indonesia, were radiocarbon dated to c. 30,000 – c. 40,000 BP and c. 17,000 BP respectively. For the duration of the Paleolithic, human populations remained low, especially outside the equatorial region. The entire population of Europe between 16,000 and 11,000 BP likely averaged some 30,000 individuals, and between 40,000 and 16,000 BP, it
2470-663: The Arctic Circle . By the end of the Upper Paleolithic Age humans had crossed Beringia and expanded throughout the Americas continents. The term " Palaeolithic " was coined by archaeologist John Lubbock in 1865. It derives from Greek: παλαιός , palaios , "old"; and λίθος , lithos , "stone", meaning "old age of the stone" or "Old Stone Age ". The Paleolithic overlaps with the Pleistocene epoch of geologic time. Both ended 12,000 years ago although
2565-582: The Hadza people and the Aboriginal Australians suggest that the sexual division of labor in the Paleolithic was relatively flexible. Men may have participated in gathering plants, firewood and insects, and women may have procured small game animals for consumption and assisted men in driving herds of large game animals (such as woolly mammoths and deer) off cliffs. Additionally, recent research by anthropologist and archaeologist Steven Kuhn from
2660-510: The Isthmus of Panama , bringing a nearly complete end to South America's distinctive marsupial fauna. The formation of the isthmus had major consequences on global temperatures, because warm equatorial ocean currents were cut off, and the cold Arctic and Antarctic waters lowered temperatures in the now-isolated Atlantic Ocean. Most of Central America formed during the Pliocene to connect
2755-646: The Mousterian and the Aterian industries. Lower Paleolithic humans used a variety of stone tools, including hand axes and choppers. Although they appear to have used hand axes often, there is disagreement about their use. Interpretations range from cutting and chopping tools, to digging implements, to flaking cores, to the use in traps, and as a purely ritual significance, perhaps in courting behavior . William H. Calvin has suggested that some hand axes could have served as "killer frisbees " meant to be thrown at
2850-533: The Oldowan , began around 2.6 million years ago. It produced tools such as choppers , burins , and stitching awls . It was completely replaced around 250,000 years ago by the more complex Acheulean industry, which was first conceived by Homo ergaster around 1.8–1.65 million years ago. The Acheulean implements completely vanish from the archaeological record around 100,000 years ago and were replaced by more complex Middle Paleolithic tool kits such as
2945-513: The Pleistocene epoch, our ancestors relied on simple food processing techniques such as roasting . The Upper Palaeolithic saw the emergence of boiling, an advance in food processing technology which rendered plant foods more digestible, decreased their toxicity, and maximised their nutritional value. Thermally altered rock (heated stones) are easily identifiable in the archaeological record. Stone-boiling and pit-baking were common techniques which involved heating large pebbles then transferring
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3040-721: The Ruwenzori Range in east and central Africa were larger. Glaciers existed in the mountains of Ethiopia and to the west in the Atlas Mountains . In the northern hemisphere, many glaciers fused into one. The Cordilleran Ice Sheet covered the North American northwest; the Laurentide covered the east. The Fenno-Scandian ice sheet covered northern Europe, including Great Britain; the Alpine ice sheet covered
3135-742: The World Health Organization and the World Bank known as the Global Burden of Disease Study , which was undertaken in 1990. It is now a key measure employed by the United Nations World Health Organization in such publications as its Global Burden of Disease . The DALY was also used in the 1993 World Development Report . Both DALYs and QALYs are forms of HALYs , health-adjusted life years. Some critics have alleged that DALYs are essentially an economic measure of human productive capacity for
3230-726: The Alps. Scattered domes stretched across Siberia and the Arctic shelf. The northern seas were frozen. During the late Upper Paleolithic (Latest Pleistocene) c. 18,000 BP, the Beringia land bridge between Asia and North America was blocked by ice, which may have prevented early Paleo-Indians such as the Clovis culture from directly crossing Beringia to reach the Americas. According to Mark Lynas (through collected data),
3325-571: The Lower Paleolithic ( c. 1.9 million years ago) or at the latest in the early Middle Paleolithic ( c. 250,000 years ago). Some scientists have hypothesized that hominins began cooking food to defrost frozen meat, which would help ensure their survival in cold regions. Archaeologists cite morphological shifts in cranial anatomy as evidence for emergence of cooking and food processing technologies. These morphological changes include decreases in molar and jaw size, thinner tooth enamel , and decrease in gut volume. During much of
3420-837: The Lower Paleolithic, human societies were possibly more hierarchical than their Middle and Upper Paleolithic descendants, and probably were not grouped into bands , though during the end of the Lower Paleolithic, the latest populations of the hominin Homo erectus may have begun living in small-scale (possibly egalitarian) bands similar to both Middle and Upper Paleolithic societies and modern hunter-gatherers. Middle Paleolithic societies, unlike Lower Paleolithic and early Neolithic ones, consisted of bands that ranged from 20–30 or 25–100 members and were usually nomadic. These bands were formed by several families. Bands sometimes joined together into larger "macrobands" for activities such as acquiring mates and celebrations or where resources were abundant. By
3515-680: The Medes and the Lydians in the early 6th century BC Halley's Bible Handbook by Dr. Henry Hampton Halley (1824-1965), a.k.a. 'Halley's' Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Halys . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Halys&oldid=1179113987 " Category : Disambiguation pages Hidden categories: Short description
3610-563: The Mediterranean Sea, such as Coa de sa Multa ( c. 300,000 BP), has also indicated that both Middle and Upper Paleolithic humans used rafts to travel over large bodies of water (i.e. the Mediterranean Sea) for the purpose of colonizing other bodies of land. By around 200,000 BP, Middle Paleolithic stone tool manufacturing spawned a tool-making technique known as the prepared-core technique , which
3705-406: The Middle Paleolithic because trade between bands would have helped ensure their survival by allowing them to exchange resources and commodities such as raw materials during times of relative scarcity (i.e. famine, drought). Like in modern hunter-gatherer societies, individuals in Paleolithic societies may have been subordinate to the band as a whole. Both Neanderthals and modern humans took care of
3800-601: The Neanderthals hunted large game animals mostly by ambushing them and attacking them with handheld weapons such as thrusting spears rather than attacking them from a distance with projectiles. During the Upper Paleolithic , further inventions were made, such as the net ( c. 22,000 or c. 29,000 BP) bolas , the spear thrower ( c. 30,000 BP), the bow and arrow ( c. 25,000 or c. 30,000 BP) and
3895-474: The Neolithic. Upper Paleolithic cultures were probably able to time the migration of game animals such as wild horses and deer. This ability allowed humans to become efficient hunters and to exploit a wide variety of game animals. Recent research indicates that the Neanderthals timed their hunts and the migrations of game animals long before the beginning of the Upper Paleolithic. The social organization of
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3990-693: The Paleolithic Age went through a set of glacial and interglacial periods in which the climate periodically fluctuated between warm and cool temperatures. By c. 50,000 – c. 40,000 BP, the first humans set foot in Australia . By c. 45,000 BP, humans lived at 61°N latitude in Europe . By c. 30,000 BP, Japan was reached, and by c. 27,000 BP humans were present in Siberia , above
4085-531: The Pleistocene started 2.6 million years ago, 700,000 years after the Paleolithic's start. This epoch experienced important geographic and climatic changes that affected human societies. During the preceding Pliocene , continents had continued to drift from possibly as far as 250 km (160 mi ) from their present locations to positions only 70 km (43 mi) from their current location. South America became linked to North America through
4180-533: The Pleistocene's overall climate could be characterized as a continuous El Niño with trade winds in the south Pacific weakening or heading east, warm air rising near Peru , warm water spreading from the west Pacific and the Indian Ocean to the east Pacific, and other El Niño markers. The Paleolithic is often held to finish at the end of the ice age (the end of the Pleistocene epoch), and Earth's climate became warmer. This may have caused or contributed to
4275-492: The University of Arizona is argued to support that this division of labor did not exist prior to the Upper Paleolithic and was invented relatively recently in human pre-history. Sexual division of labor may have been developed to allow humans to acquire food and other resources more efficiently. Possibly there was approximate parity between men and women during the Middle and Upper Paleolithic, and that period may have been
4370-410: The adoption of agriculture because women in farming societies typically have more pregnancies and are expected to do more demanding work than women in hunter-gatherer societies. Like most modern hunter-gatherer societies, Paleolithic and Mesolithic groups probably followed a largely ambilineal approach. At the same time, depending on the society, the residence could be virilocal, uxorilocal, and sometimes
4465-433: The affected individual. In response, defenders of DALYs have argued that while DALYs have an age-weighting function that has been rationalized based on the economic productivity of persons at that age, health-related quality of life measures are used to determine the disability weights, which range from 0 to 1 (no disability to 100% disabled) for all disease. These defenders emphasize that disability weights are based not on
4560-479: The beginning of the period. Climates during the Pliocene became cooler and drier, and seasonal, similar to modern climates. Ice sheets grew on Antarctica . The formation of an Arctic ice cap around 3 million years ago is signaled by an abrupt shift in oxygen isotope ratios and ice-rafted cobbles in the North Atlantic and North Pacific Ocean beds. Mid-latitude glaciation probably began before
4655-527: The calculation of DALYs lost due to disability. Years lost to premature death are determined from the age at death and life expectancy. The Global Burden of Disease Study (GBD) 2001–2002 counted disability adjusted life years equally for all ages, but the GBD 1990 and GBD 2004 studies used the formula W = 0.1658 Y e − 0.04 Y {\displaystyle W=0.1658Ye^{-0.04Y}} where Y {\displaystyle Y}
4750-564: The continents of North and South America, allowing fauna from these continents to leave their native habitats and colonize new areas. Africa's collision with Asia created the Mediterranean, cutting off the remnants of the Tethys Ocean . During the Pleistocene , the continents were essentially at their modern positions; the tectonic plates on which they sit have probably moved at most 100 km (62 mi) from each other since
4845-692: The damage done to the attacker and decreased the relative amount of territory attackers could gain. However, other sources claim that most Paleolithic groups may have been larger, more complex, sedentary and warlike than most contemporary hunter-gatherer societies, due to occupying more resource-abundant areas than most modern hunter-gatherers who have been pushed into more marginal habitats by agricultural societies. Anthropologists have typically assumed that in Paleolithic societies, women were responsible for gathering wild plants and firewood, and men were responsible for hunting and scavenging dead animals. However, analogies to existent hunter-gatherer societies such as
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#17327657110844940-592: The date of the transition varies geographically by several thousand years. During the Paleolithic Age, hominins grouped together in small societies such as bands and subsisted by gathering plants, fishing, and hunting or scavenging wild animals. The Paleolithic Age is characterized by the use of knapped stone tools, although at the time humans also used wood and bone tools. Other organic commodities were adapted for use as tools, including leather and vegetable fibers ; however, due to rapid decomposition, these have not survived to any great degree. About 50,000 years ago,
5035-448: The disability weight meant to indicate the level of disability that results from the specific condition. Examples of the disability weight are shown on the right. Some of these are "short term", and the long-term weights may be different. The most noticeable change between the 2004 and 2010 figures for disability weights above are for blindness as it was considered the weights are a measure of health rather than well-being (or welfare) and
5130-555: The earliest Paleolithic ( Lower Paleolithic ) societies remains largely unknown to scientists, though Lower Paleolithic hominins such as Homo habilis and Homo erectus are likely to have had more complex social structures than chimpanzee societies. Late Oldowan/Early Acheulean humans such as Homo ergaster / Homo erectus may have been the first people to invent central campsites or home bases and incorporate them into their foraging and hunting strategies like contemporary hunter-gatherers, possibly as early as 1.7 million years ago; however,
5225-543: The earliest solid evidence for the existence of home bases or central campsites (hearths and shelters) among humans only dates back to 500,000 years ago. Similarly, scientists disagree whether Lower Paleolithic humans were largely monogamous or polygynous . In particular, the Provisional model suggests that bipedalism arose in pre-Paleolithic australopithecine societies as an adaptation to monogamous lifestyles; however, other researchers note that sexual dimorphism
5320-537: The elderly members of their societies during the Middle and Upper Paleolithic. Some sources claim that most Middle and Upper Paleolithic societies were possibly fundamentally egalitarian and may have rarely or never engaged in organized violence between groups (i.e. war). Some Upper Paleolithic societies in resource-rich environments (such as societies in Sungir , in what is now Russia) may have had more complex and hierarchical organization (such as tribes with
5415-480: The end of the Paleolithic era ( c. 10,000 BP), people began to settle down into permanent locations, and began to rely on agriculture for sustenance in many locations. Much evidence exists that humans took part in long-distance trade between bands for rare commodities (such as ochre , which was often used for religious purposes such as ritual ) and raw materials, as early as 120,000 years ago in Middle Paleolithic. Inter-band trade may have appeared during
5510-794: The end of the Paleolithic, specifically the Middle or Upper Paleolithic, people began to produce works of art such as cave paintings , rock art and jewellery and began to engage in religious behavior such as burials and rituals. At the beginning of the Paleolithic, hominins were found primarily in eastern Africa, east of the Great Rift Valley . Most known hominin fossils dating earlier than one million years before present are found in this area, particularly in Kenya , Tanzania , and Ethiopia . By c. 2,000,000 – c. 1,500,000 BP, groups of hominins began leaving Africa, settling southern Europe and Asia. The South Caucasus
5605-680: The end of the Pleistocene caused the mammoths' habitat to shrink, resulting in a drop in population. The small populations were then hunted out by Paleolithic humans. The global warming that occurred during the end of the Pleistocene and the beginning of the Holocene may have made it easier for humans to reach mammoth habitats that were previously frozen and inaccessible. Small populations of woolly mammoths survived on isolated Arctic islands, Saint Paul Island and Wrangel Island , until c. 3700 BP and c. 1700 BP respectively. The Wrangel Island population became extinct around
5700-430: The end of the epoch. The global cooling that occurred during the Pliocene may have spurred on the disappearance of forests and the spread of grasslands and savannas . The Pleistocene climate was characterized by repeated glacial cycles during which continental glaciers pushed to the 40th parallel in some places. Four major glacial events have been identified, as well as many minor intervening events. A major event
5795-632: The entire surface of the Earth. During interglacial times, drowned coastlines were common, mitigated by isostatic or other emergent motion of some regions. The effects of glaciation were global. Antarctica was ice-bound throughout the Pleistocene and the preceding Pliocene. The Andes were covered in the south by the Patagonian ice cap. There were glaciers in New Zealand and Tasmania . The decaying glaciers of Mount Kenya , Mount Kilimanjaro , and
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#17327657110845890-403: The extinction of the Pleistocene megafauna , although it is also possible that the late Pleistocene extinctions were (at least in part) caused by other factors such as disease and overhunting by humans. New research suggests that the extinction of the woolly mammoth may have been caused by the combined effect of climatic change and human hunting. Scientists suggest that climate change during
5985-400: The figurines as representations of goddesses , pornographic imagery, apotropaic amulets used for sympathetic magic, and even as self-portraits of women themselves. R. Dale Guthrie has studied not only the most artistic and publicized paintings, but also a variety of lower-quality art and figurines, and he identifies a wide range of skill and ages among the artists. He also points out that
6080-513: The first users of stone tools. Excavations in Gona, Ethiopia , have produced thousands of artifacts, and through radioisotopic dating and magnetostratigraphy the sites can be firmly dated to 2.6 million years ago. Evidence shows these early hominins intentionally selected raw stone with good flaking qualities and chose appropriately sized stones for their needs to produce sharp-edged tools for cutting. The earliest Paleolithic stone tool industry,
6175-587: The genus Gloydius , also known as Asian moccasin snakes, a group of venomous pitvipers found in Asia Gloydius halys , also known by the names Halys viper and Halys pit viper Quentin Halys (born 1996), French tennis player See also [ edit ] Quentin Halys (born 1996), French tennis player Battle of Halys , 82 BC Battle of the Eclipse (also Battle of Halys ) between
6270-421: The genus Homo —such as Homo habilis , who used simple stone tools—into anatomically modern humans as well as behaviourally modern humans by the Upper Paleolithic . During the end of the Paleolithic Age, specifically the Middle or Upper Paleolithic Age, humans began to produce the earliest works of art and to engage in religious or spiritual behavior such as burial and ritual . Conditions during
6365-546: The hot stones into a perishable container to heat the water. This technology is typified in the Middle Palaeolithic example of the Abri Pataud hearths. The Lower Paleolithic Homo erectus possibly invented rafts ( c. 840,000 – c. 800,000 BP) to travel over large bodies of water, which may have allowed a group of Homo erectus to reach the island of Flores and evolve into
6460-416: The interplay between life expectancy and years lost, discounting, and social weighting are complex, depending on the severity and duration of illness. For example, the parameters used in the GBD 1990 study generally give greater weight to deaths at any year prior to age 39 than afterward, with the death of a newborn weighted at 33 DALYs and the death of someone aged 5–20 weighted at approximately 36 DALYs. As
6555-634: The invention of these devices brought fish into the human diets, which provided a hedge against starvation and a more abundant food supply. Thanks to their technology and their advanced social structures, Paleolithic groups such as the Neanderthals—who had a Middle Paleolithic level of technology—appear to have hunted large game just as well as Upper Paleolithic modern humans, and the Neanderthals in particular may have likewise hunted with projectile weapons. Nonetheless, Neanderthal use of projectile weapons in hunting occurred very rarely (or perhaps never) and
6650-434: The lack of control of fire: studies of cave settlements in Europe indicate no regular use of fire prior to c. 400,000 – c. 300,000 BP. East Asian fossils from this period are typically placed in the genus Homo erectus . Very little fossil evidence is available at known Lower Paleolithic sites in Europe, but it is believed that hominins who inhabited these sites were likewise Homo erectus . There
6745-581: The late Middle Paleolithic around 100,000 BP or perhaps even earlier. Archaeological evidence from the Dordogne region of France demonstrates that members of the European early Upper Paleolithic culture known as the Aurignacian used calendars ( c. 30,000 BP). This was a lunar calendar that was used to document the phases of the moon. Genuine solar calendars did not appear until
6840-499: The main causes of good years of expected life lost to disease or premature death. Despite this, Australia has one of the longest life expectancies in the world . These illustrate the problematic diseases and outbreaks occurring in 2013 in Zimbabwe, shown to have the greatest impact on health disability were typhoid, anthrax, malaria, common diarrhea, and dysentery. Posttraumatic stress disorder (PTSD) DALY estimates from 2004 for
6935-415: The most gender-equal time in human history. Archaeological evidence from art and funerary rituals indicates that a number of individual women enjoyed seemingly high status in their communities, and it is likely that both sexes participated in decision making. The earliest known Paleolithic shaman ( c. 30,000 BP) was female. Jared Diamond suggests that the status of women declined with
7030-620: The oldest example of ceramic art, the Venus of Dolní Věstonice ( c. 29,000 – c. 25,000 BP). Kilu Cave at Buku island , Solomon Islands , demonstrates navigation of some 60 km of open ocean at 30,000 BCcal. Early dogs were domesticated sometime between 30,000 and 14,000 BP, presumably to aid in hunting. However, the earliest instances of successful domestication of dogs may be much more ancient than this. Evidence from canine DNA collected by Robert K. Wayne suggests that dogs may have been first domesticated in
7125-471: The paintings of half-human, half-animal figures and the remoteness of the caves are reminiscent of modern hunter-gatherer shamanistic practices. Symbol-like images are more common in Paleolithic cave paintings than are depictions of animals or humans, and unique symbolic patterns might have been trademarks that represent different Upper Paleolithic ethnic groups. Venus figurines have evoked similar controversy. Archaeologists and anthropologists have described
7220-695: The pigment ochre from late Lower Paleolithic Acheulean archaeological sites suggests that Acheulean societies, like later Upper Paleolithic societies, collected and used ochre to create rock art. Nevertheless, it is also possible that the ochre traces found at Lower Paleolithic sites is naturally occurring. Upper Paleolithic humans produced works of art such as cave paintings, Venus figurines, animal carvings, and rock paintings. Upper Paleolithic art can be divided into two broad categories: figurative art such as cave paintings that clearly depicts animals (or more rarely humans); and nonfigurative, which consists of shapes and symbols. Cave paintings have been interpreted in
7315-486: The planet. Multiple hominid groups coexisted for some time in certain locations. Homo neanderthalensis were still found in parts of Eurasia c. 40,000 BP years, and engaged in an unknown degree of interbreeding with Homo sapiens sapiens . DNA studies also suggest an unknown degree of interbreeding between Homo sapiens sapiens and Homo sapiens denisova . Hominin fossils not belonging either to Homo neanderthalensis or to Homo sapiens species, found in
7410-647: The possible wood hut at Terra Amata . Fire was used by the Lower Paleolithic hominins Homo erectus and Homo ergaster as early as 300,000 to 1.5 million years ago and possibly even earlier by the early Lower Paleolithic (Oldowan) hominin Homo habilis or by robust Australopithecines such as Paranthropus . However, the use of fire only became common in the societies of the following Middle Stone Age and Middle Paleolithic . Use of fire reduced mortality rates and provided protection against predators. Early hominins may have begun to cook their food as early as
7505-451: The reference life table derived by the GBD study. The World Health Organization (WHO) used age weighting and time discounting at 3 percent in DALYs prior to 2010 but discontinued using them starting in 2010. There are two components to this differential accounting of time: age-weighting and time-discounting. Age-weighting is based on the theory of human capital. Commonly, years lived as
7600-570: The same at different ages. For example, in the Paleolithic era, life expectancy at birth was 33 years, but life expectancy at the age of 15 was an additional 39 years (total 54). Historically Japanese life expectancy statistics have been used as the standard for measuring premature death, as the Japanese have the longest life expectancies. Other approaches have since emerged, include using national life tables for YLL calculations, or using
7695-408: The same time the island was settled by prehistoric humans. There is no evidence of prehistoric human presence on Saint Paul island (though early human settlements dating as far back as 6500 BP were found on the nearby Aleutian Islands ). Nearly all of our knowledge of Paleolithic people and way of life comes from archaeology and ethnographic comparisons to modern hunter-gatherer cultures such as
7790-573: The sample worked in the manufacturing sector and represented 70% of healthy years lost by all workers. Originally developed by Harvard University for the World Bank in 1990, the World Health Organization subsequently adopted the method in 1996 as part of the Ad hoc Committee on Health Research "Investing in Health Research & Development" report. The DALY was first conceptualized by Christopher J. L. Murray and Lopez in work carried out with
7885-423: The small hominin Homo floresiensis . However, this hypothesis is disputed within the anthropological community. The possible use of rafts during the Lower Paleolithic may indicate that Lower Paleolithic hominins such as Homo erectus were more advanced than previously believed, and may have even spoken an early form of modern language. Supplementary evidence from Neanderthal and modern human sites located around
7980-481: The spouses could live with neither the husband's relatives nor the wife's relatives at all. Taken together, most likely, the lifestyle of hunter-gatherers can be characterized as multilocal. Early examples of artistic expression, such as the Venus of Tan-Tan and the patterns found on elephant bones from Bilzingsleben in Thuringia , may have been produced by Acheulean tool users such as Homo erectus prior to
8075-754: The start of the Middle Paleolithic period. However, the earliest undisputed evidence of art during the Paleolithic comes from Middle Paleolithic / Middle Stone Age sites such as Blombos Cave –South Africa–in the form of bracelets , beads , rock art , and ochre used as body paint and perhaps in ritual. Undisputed evidence of art only becomes common in the Upper Paleolithic. Lower Paleolithic Acheulean tool users, according to Robert G. Bednarik, began to engage in symbolic behavior such as art around 850,000 BP. They decorated themselves with beads and collected exotic stones for aesthetic, rather than utilitarian qualities. According to him, traces of
8170-568: The sum of these two components: The DALY relies on an acceptance that the most appropriate measure of the effects of chronic illness is time, both time lost due to premature death and time spent disabled by disease. One DALY, therefore, is equal to one year of healthy life lost. How much a medical condition affects a person is called the disability weight (DW). This is determined by disease or disability and does not vary with age. Tables have been created of thousands of diseases and disabilities, ranging from Alzheimer's disease to loss of finger, with
8265-422: The tools themselves that allowed access to a wider variety and amount of food sources. For example, microliths or small stone tools or points were invented around 70,000–65,000 BP and were essential to the invention of bows and atlatls (spear throwers) in the following Upper Paleolithic. Harpoons were invented and used for the first time during the late Middle Paleolithic ( c. 90,000 BP);
8360-540: The total burden. Also, QALYs tend to be an individual measure and not a societal measure. Traditionally, health liabilities were expressed using one measure, the years of life lost (YLL) due to dying early. A medical condition that did not result in dying younger than expected was not counted. The burden of living with a disease or disability is measured by the years lost due to disability (YLD) component, sometimes also known as years lost due to disease or years lived with disability/disease. DALYs are calculated by taking
8455-557: The total economic consequences are estimated to amount to $ 2 trillion. These numbers can be compared to other treatments for other diseases, to determine whether investing resources in preventing or treating a different disease would be more efficient in terms of overall health. Schizophrenia has a 0.53 weighting and a broken femur a 0.37 weighting in the latest WHO weightings. Cancer (25.1/1,000), cardiovascular (23.8/1,000), mental problems (17.6/1,000), neurological (15.7/1,000), chronic respiratory (9.4/1,000) and diabetes (7.2/1,000) are
8550-565: The world's 25 most populous countries give Asian/Pacific countries and the United States as the places where PTSD impact is most concentrated (as shown here ). The disability-adjusted life years attributable to hearing impairment for noise-exposed U.S. workers across all industries was calculated to be 2.53 healthy years lost annually per 1,000 noise-exposed workers. Workers in the mining and construction sectors lost 3.45 and 3.09 healthy years per 1,000 workers, respectively. Overall, 66% of
8645-523: Was even lower at 4,000–6,000 individuals. However, remains of thousands of butchered animals and tools made by Palaeolithic humans were found in Lapa do Picareiro , a cave in Portugal , dating back between 41,000 and 38,000 years ago. Some researchers have noted that science, limited in that age to some early ideas about astronomy (or cosmology ), had limited impact on Paleolithic technology. Making fire
8740-429: Was more elaborate than previous Acheulean techniques. This technique increased efficiency by allowing the creation of more controlled and consistent flakes . It allowed Middle Paleolithic humans to create stone-tipped spears , which were the earliest composite tools, by hafting sharp pointy stone flakes onto wooden shafts. In addition to improving tool-making methods, the Middle Paleolithic also saw an improvement of
8835-402: Was occupied by c. 1,700,000 BP, and northern China was reached by c. 1,660,000 BP. By the end of the Lower Paleolithic, members of the hominin family were living in what is now China, western Indonesia, and, in Europe, around the Mediterranean and as far north as England, France, southern Germany, and Bulgaria. Their further northward expansion may have been limited by
8930-459: Was there a formal division of labor during the Paleolithic. Each member of the group was skilled at all tasks essential to survival, regardless of individual abilities. Theories to explain the apparent egalitarianism have arisen, notably the Marxist concept of primitive communism . Christopher Boehm (1999) has hypothesized that egalitarianism may have evolved in Paleolithic societies because of
9025-433: Was widespread knowledge, and it was possible without an understanding of chemical processes, These types of practical skills are sometimes called crafts. Religion, superstitution or appeals to the supernatural may have played a part in the cultural explanations of phenomena like combustion . Paleolithic humans made tools of stone, bone (primarily of deer), and wood. The early paleolithic hominins, Australopithecus , were
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