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Human height or stature is the distance from the bottom of the feet to the top of the head in a human body, standing erect. It is measured using a stadiometer, in centimetres when using the metric system or SI system, or feet and inches when using United States customary units or the imperial system.
In the early phase of anthropometric research history, questions about height measuring techniques for measuring nutritional status often concerned genetic differences.
Height is also important because it is closely correlated with other health components, such as life expectancy. Studies show that there is a correlation between small stature and a longer life expectancy. Individuals of small stature are also more likely to have lower blood pressure and are less likely to acquire cancer. The University of Hawaii has found that the "longevity gene" FOXO3 that reduces the effects of aging is more commonly found in individuals of small body size. Short stature decreases the risk of venous insufficiency.
When populations share genetic backgrounds and environmental factors, average height is frequently characteristic within the group. Exceptional height variation (around 20% deviation from average) within such a population is sometimes due to gigantism or dwarfism, which are medical conditions caused by specific or endocrine abnormalities.Ganong, William F. (2001) Review of Medical Physiology, Lange Medical, pp. 392-397, .
The development of human height can serve as an indicator of two key welfare components, namely nutritional quality and health. In regions of poverty or warfare, environmental factors like chronic malnutrition during childhood or adolescence may result in delayed growth and/or marked reductions in adult stature even without the presence of any of these medical conditions.
Growth has long been recognized as a measure of the health of individuals, hence part of the reasoning for the use of . For individuals, as indicators of health problems, growth trends are tracked for significant deviations, and growth is also monitored for significant deficiency from genetic expectations. Genetics is a major factor in determining the height of individuals, though it is far less influential regarding differences among populations. Average height is relevant to the measurement of the health and wellness standard of living and quality of life of populations.
Humans grow fastest (other than in the womb) as and , rapidly declining from a maximum at birth to roughly age 2, tapering to a slowly declining rate, and then, during the pubertal growth spurt (with an average girl starting her puberty and pubertal growth spurt at 10 years and an average boy starting his puberty and pubertal growth spurt at 12 years), a rapid rise to a second maximum (at around 11−12 years for an average female, and 13−14 years for an average male), followed by a steady decline to zero. The average female growth speed trails off to zero at about 15 or 16 years, whereas the average male curve continues for approximately 3 more years, going to zero at about 18−19, although there is limited research to suggest minor height growth after the age of 19 in males. These are also critical periods where stressors such as malnutrition (or even severe child neglect) have the greatest effect.
Moreover, the health of a mother throughout her life, especially during her critical period and pregnancy, has a role. A healthier child and adult develops a body that is better able to provide optimal prenatal conditions. The pregnant mother's health is essential for herself but also the fetus as gestation is itself a critical period for an embryo/fetus, though some problems affecting height during this period are resolved by catch-up growth assuming childhood conditions are good. Thus, there is a cumulative generation effect such that nutrition and health over generations influence the height of descendants to varying degrees.
The age of the mother also has some influence on her child's height. Studies in modern times have observed a gradual increase in height with maternal age, though these early studies suggest that trend is due to various socio-economic situations that select certain demographics as being more likely to have a first birth early in the mother's life. Table 1. Association of 'biological' and demographic variables and height. Figures are coefficients (95% confidence intervals) adjusted for each of the variables shown in These same studies show that children born to a young mother are more likely to have below-average educational and behavioural development, again suggesting an ultimate cause of resources and family status rather than a purely biological explanation.
In 1988, it was observed that first-born males were shorter than later-born males. However, in 2013, the reverse observation was made. The study authors suggest that the cause may be socioeconomic in nature.
The Nilotic peoples of Sudan such as the Shilluk people and Dinka have been described as some of the tallest in the world. Dinka Ruweng males investigated by Roberts in 1953−1954 were on average tall, and Shilluk males averaged . The Nilotic people are characterized as having long legs, narrow bodies and short trunks, an adaptation to hot weather. However, male Dinka and Shilluk refugees measured in 1995 in Southwestern Ethiopia were on average only and tall, respectively. As the study points out, Nilotic people "may attain greater height if privileged with favourable environmental conditions during early childhood and adolescence, allowing full expression of the genetic material." Before fleeing, these refugees were subject to privation as a consequence of the succession of civil wars in their country from 1955 to the present.
Attributed as a significant reason for the trend of increasing height in parts of Europe are the egalitarian populations where proper Health care and adequate nutrition had been relatively equally distributed as of 2004. The uneven distribution of nutritional resources makes it more plausible for individuals with better access to resources to grow taller, while individuals with worse access to resources have a lessened chance of growing taller.
Changes in diet (nutrition) and a general rise in quality of health care and standard of living are the cited factors in Asian populations. Malnutrition including chronic undernutrition and acute malnutrition is known to have caused stunted growth in various populations. This has been seen in North Korea, parts of Africa, certain historical Europe, and other populations. Developing countries such as Guatemala have rates of stunting in children under 5 living as high as 82.2% in Totonicapán, and 49.8% nationwide.
Average height in a nation is correlated with protein quality. Nations that consume more protein in the form of meat, dairy, eggs, and fish tend to be taller, while those that obtain more protein from cereals tend to be shorter. Therefore, populations with high cattle per capita and high consumption of dairy live longer and are taller. Historically, this can be seen in the cases of the United States, Argentina, New Zealand and Australia in the beginning of the 19th century. Moreover, when the production and consumption of milk and beef is taken to consideration, it can be seen why the Germanic people who lived outside of the Roman Empire were taller than those who lived at its heart.
Nonetheless, modern westernized interpretations of the relationship between height and health fail to account for the observed height variations worldwide.Cavalli-Sforza, L.L., & Cavalli-Sforza, F., 1995, The Great Human Diasporas, Cavalli-Sforza and Cavalli-Sforza note that variations in height worldwide can be partly attributed to evolutionary pressures resulting from differing environments. These evolutionary pressures result in height-related health implications. While tallness is an adaptive benefit in colder climates such as those found in Europe, shortness helps dissipate body heat in warmer climatic regions. Consequently, the relationships between health and height cannot be easily generalized since tallness and shortness can both provide health benefits in different environmental settings.
In the end, being excessively tall can cause various medical problems, including cardiovascular problems, because of the increased load on the heart to supply the body with blood, and problems resulting from the increased time it takes the brain to communicate with the extremities. For example, Robert Wadlow, the tallest human known to verifiable history, developed difficulty in walking as his height increased throughout his life. In many of the pictures of the latter portion of his life, Wadlow can be seen gripping something for support. Late in his life, although he died at age 22, he had to wear braces on his legs and walk with a cane; and he died after developing an infection in his legs because he was unable to feel the irritation and cutting caused by his leg braces.
Sources are in disagreement about the overall relationship between height and longevity. Samaras and Elrick, in the Western Journal of Medicine, demonstrate an inverse correlation between height and longevity in several mammals including humans.
Women whose height is under may have a small human pelvis, resulting in such complications during childbirth as shoulder dystocia.
A study done in Sweden in 2005 has shown that there is a strong inverse correlation between height and suicide among Swedish men.
A large body of human and animal evidence indicates that shorter, smaller bodies age more slowly, and have fewer chronic diseases and greater longevity. For example, a study found eight areas of support for the "smaller lives longer" thesis. These areas of evidence include studies involving longevity, life expectancy, centenarians, male vs. female longevity differences, mortality advantages of shorter people, survival findings, smaller body size due to calorie restriction, and within-species body size differences. They all support the conclusion that smaller individuals live longer in healthy environments and with good nutrition. However, the difference in longevity is modest. Several human studies have found a loss of 0.5 years/centimeter of increased height (1.2 yr/inch). But these findings do not mean that all tall people die young. Many live to advanced ages and some become centenarians.Samaras TT 2014, Evidence from eight studies showing smaller body size is related to greater longevity JSRR 3(16):2150-2160. 2014: article no. JSRR.2014.16.003
In medicine, height is measured to monitor child development, this is a better indicator of growth than weight in the long term. For older people, excessive height loss is a symptom of osteoporosis. Height is also used to compute indicators like body surface area or body mass index.
A demonstration of the height-success association can be found in the realm of politics. In the United States presidential elections, the taller candidate won 22 out of 25 times in the 20th century. Nevertheless, Ignatius Loyola, founder of the Jesuits, was and several prominent world leaders of the 20th century, such as Vladimir Lenin, Benito Mussolini, Nicolae Ceaușescu, and Joseph Stalin were of below-average height. These examples, however, were all before modern forms of multimedia (i.e., television), which may further height discrimination in modern society. Further, growing evidence suggests that height may be a proxy for confidence, which is likewise strongly correlated with occupational success.Nickless, Rachel (28 November 2012) Lifelong confidence rewarded in bigger pay packets . Afr.com. Retrieved on 2 September 2013.
Until the wedding of former Chinese professional basketball player Sun Mingming on 4 August 2013, the tallest living married couple were ex-basketball players Yao Ming and Ye Li (both of China), standing at and respectively, giving a combined height of . They married in Shanghai, China, on 6 August 2007.
Human height worldwide sharply declined with the advent of the Neolithic Revolution, likely due to significantly less protein consumption by agriculturalists as compared with hunter-gatherers.
During the Bronze Age, height varied significantly by region. The people of the Indus Valley Civilization were among the tallest in the world, with an average height of for males and for females. The people of Ancient Egypt stood around for males and for females. The Ancient Greeks averaged for males and for females. The Romans were slightly taller, with an average height of for males and for females.
Before the mid-nineteenth century, there were cycles in height, with periods of increase and decrease; however, apart from the decline associated with the transition to agriculture, examinations of skeletons show no significant differences in height from the Neolithic Revolution through the early 1800s.
The average height of Americans and Europeans decreased during periods of rapid industrialization, possibly due to rapid population growth and broad decreases in economic status. This has become known as the early-industrial growth puzzle (in the U.S. context, the Antebellum Puzzle). In England, during the early nineteenth century, the difference between the average height of English upper-class youth (students of Sandhurst Military Academy) and English working-class youth (Marine Society boys) reached , the highest that has been observed. (2025). 9780762313709 ISBN 9780762313709
In general, there were no significant differences in regional height levels throughout the nineteenth century. The only exceptions of this rather uniform height distribution were people in the Anglo-Saxon settlement regions who were taller than the average and people from Southeast Asia with below-average heights. However, at the end of the nineteenth century and in the middle of the first globalization period, heights between rich and poor countries began to diverge. These differences did not disappear in the deglobalization period of the two World wars. In 2014, Baten and Blum found that in the nineteenth century, important determinants of height were the local availability of cattle, meat and milk as well as the local disease environment. In the late twentieth century, however, technologies and trade became more important, decreasing the impact of local availability of agricultural products.
From 1830 to 1857, the average height of a Dutch person decreased, even while Dutch real GNP per capita was growing at an average rate of more than 0.5% per year. The worst decline was in urban areas that in 1847, the urban height penalty was . Urban mortality was also much higher than in rural regions. In 1829, the average urban and rural Dutchman was . By 1856, the average rural Dutchman was and urban Dutchman was .
In the late nineteenth century, the Netherlands was a land renowned for its short population, but as of 2012, Dutch people were among the world's tallest, with young men averaging tall.
A 2004 report citing a 2003 UNICEF study on the effects of malnutrition in North Korea, due to "successive famines," found young adult males to be significantly shorter. In contrast South Koreans "feasting on an increasingly Western-influenced diet," without famine, were growing taller. The height difference is minimal for Koreans over forty years old, who grew up at a time when economic conditions in the North were roughly comparable to those in the South, while height disparities are most acute for Koreans who grew up in the mid-1990s a demographic in which South Koreans are about taller than their North Korean counterparts as this was a period during which the North was affected by a harsh famine where hundreds of thousands, if not millions, died of hunger. A study by South Korean anthropologists of North Korean children who had defected to China found that eighteen-year-old males were shorter than South Koreans their age due to malnutrition.
The height of British children growing up during the years of austerity has decreased: as of 2019, the average five-year-old boy measured and the average girl . They were shorter and more obese than many of their European peers.
Adult height between populations often differs significantly. For example, the average height of women from the Czech Republic is greater than that of men from Malawi. This may be caused by genetic differences, childhood lifestyle differences (nutrition, sleep patterns, physical labor), or both.
Depending on sex, genetic, and environmental factors, shrinkage of stature may begin in middle age in some individuals but tends to be universal in the extremely aged. This decrease in height is due to such factors as decreased height of inter-vertebral discs because of desiccation, atrophy of soft tissues, and postural changes secondary to degenerative disease.
Working on data of Indonesia, the study by Baten, Stegl and van der Eng suggests a positive relationship of economic development and average height. In Indonesia, human height has decreased coincidentally with natural or political shocks.
In 2017, men from Bosnia and Herzegovina, the Netherlands, Montenegro, and Serbia have the tallest average height.
In 2024, the world's three tallest populations were in the Netherlands, Montenegro, and Estonia.
A 2005 study found teenagers from the Dinaric Alps to be the tallest people in the world.
Dinka people are sometimes noted for their height, with the Tutsi of Rwanda believed to be the tallest people in Africa. In a sample of 52 Dinka Agaar, Roberts and Bainbridge reported a mean height of . In 227 Dinka Ruweng, they reported . Both figures derived from 1953 to 1954. In Tibet, the are known for their tall height. Mean height of male Khampas is .
For example, a typical measurement error of plus or minus may completely nullify 0.5 cm of actual growth resulting in either a "negative" 0.5 cm growth (due to overestimation in the previous visit combined with underestimation in the latter), up to a growth (the first visit underestimating and the second visit overestimating) in the same elapsed period between measurements. Note there is a discontinuity in the growth curves at age 2, which reflects the difference in recumbent length (with the child on his or her back), used in measuring infants and toddlers, and standing height typically measured from age 2 onwards.
Crown-rump length is the measurement of the length of human and from the top of the head (crown) to the bottom of the buttocks (rump). It is typically determined from ultrasound imagery and can be used to estimate gestational age.
Until two years old, recumbent length is used to measure infants. Length measures the same dimension as height, but height is measured standing up while the length is measured lying down. In developed nations, the average total body length of a newborn is about , although premature newborns may be much smaller.
Standing height is used to measure children over two years old and adults who can stand without assistance. Measure is done with a stadiometer. In general, standing height is about less than recumbent length. Measuring a child's growth p.19, World Health Organization
Surrogate height measurements are used when standing height and recumbent length are impractical. For example, the Chumlea equation, which uses knee height, can be used to estimate the height of hospitalized patients when standard methods are impractical. Some other techniques include arm span, sitting height, and ulna length.
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