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Body mass index wiki – Body mass index

The BMI standards, as a public health tool, take this tendency into account.

Liam Adams
Saturday, September 28, 2019
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  • SI units. Retrieved

  • The reason it is so commonly employed is because it is a simple, indirect measure of body composition because it correlates highly with body fat in most people, however, the inherent flaws in the method limit the accuracy of the assessment. The optimal BMI was found to be in the range of

  • The duality of the Body Mass Index is that, whilst easy-to-use as a general calculation, it is limited in how accurate and pertinent the data obtained from it can be. Indra Farta Wijaya.

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For them, the waist circumference, the skinfold thickness or more direct methods of measuring body fat may be more useful measures. Recent studies in England have indicated that females between the ages 12 and 16 have a higher BMI than males by 1. The exponent in the denominator of the formula for BMI is arbitrary. As a rough guideline for adults a BMI of less than 20 implies underweightover 25 is overweightand over 30 is obese. According to mathematician Nick Trefethen"BMI divides the weight by too large a number for short people and too small a number for tall people.

In this paper, Keys argued that what he termed the BMI was " Categories Assessments. This assumption is often false. The WHO uses these numbers for adults: [3].

History Talk 0. The cut-off for observed risk varies based on populations and subpopulations in Europe, Asia and Africa. PMID Obesity is defined as a BMI of

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Indra Farta Wijaya. BMI provides a simple numeric measure of a person's thickness or thinnessallowing health professionals to discuss weight problems more objectively with their patients. For them, the waist circumference, the skinfold thickness or more direct methods of measuring body fat may be more useful measures. Clinical professionals should take into account the child's body composition and defer to an appropriate technique such as densitometry.

Instead of set thresholds for underweight and overweight, it is their BMI percentile compared vody children of the same gender and age that is important [1]. Female athletes who have very low BMIs 18 and below may be at risk of developing irregular menstrual cycles; additionally, females with low overall body weights may also be at greater risk of developing osteoporosis. Metabolic Syndrome. PMID

A man whose weight is lb 78 kg and height is body mass index wiki inches cm has a BMI of:. BMI Prime is a dimensionless number independent of units. The U. The Dartmouth. Ongoing Trials on Body mass index at Clinical Trials. You also have the option to opt-out of these cookies.

From Wikipedia, the free encyclopedia

BMI is useful for governments who want to know about the health of their people. Human bodies rank along the index from around 15 near starvation to over 40 morbidly obese. In the United States, BMI is also used as a measure of underweight, owing to advocacy on behalf of those suffering with eating disorders, such as anorexia nervosa and bulimia nervosa. Overweight is defined as a body mass index of It is used as a simple means of classifying sedentary individuals according to their body fat content.

  • A frequent use of the BMI is to assess how much an individual's body weight departs from what is normal or desirable for a person of his or her height.

  • In the United States, BMI is also used as a measure of underweight, owing to advocacy on behalf of those suffering with eating disorders, such as anorexia nervosa and bulimia nervosa.

  • Many will implement phased surcharges, in which the subscriber will pay an additional penalty, usually as a percentage of the monthly premium, for each arbitrary range of BMI points above a certain acceptable limit, up to a maximum BMI past which the individual will simply be denied admissibility regardless of price.

  • National Health and Nutrition Examination Survey of showed that Body mass index calculations are not just for adults—they can also be used to identify the growing number of overweight children.

A scientist named Ancel Keys wiik used the term body mass index in Waist circumference can be a better indicator of obesity-related disease risk than BMI. The Reader View of Wikipedia. High BMI is associated with type 2 diabetes only in persons with high serum gamma-glutamyl transpeptidase. Body Mass Index values for males and females aged 20 and over, and selected percentiles by age: United States, —

Clinical professionals should take into account the child's body composition and defer to an body mass index wiki technique such as densiometry. The formula is:. PMC Clinical professionals should take into account the child's body composition and defer to an appropriate technique such as densitometry. US customary units. However, many taller people are not just "scaled up" short people, but tend to have narrower frames in proportion to their height. Kanosalelam mind.

In light of this, higher death rates among thinner people would be the expected result. Related titles. Clinical professionals should take into account the child's body composition and defer to an appropriate technique such as densitometry. Body mass index. Download now.

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Abbey Jane Ayro. If the results are between Athlepedia, The Athletics Wiki Explore. These cookies do not store any personal information.

  • Mathematical Association of America. Chart showing body mass index BMI for a range of heights and weights in both metric and imperial.

  • The optimal BMI was found to be in the range of This became the definitive guide for determining if someone is overweight.

  • Clinical professionals should take into account the child's body composition and defer to an appropriate technique such as densiometry.

  • Smaller effects are seen in prospective cohort studies which lend to support active mobility as a means to prevent a further increase in BMI.

This changed in The WHO uses these numbers for adults: [3]. International Journal of Obesity. ,ass of comparison against fixed thresholds for underweight and overweight, the BMI is compared against the percentiles for children of the same sex and age. Since mass increases to the third power of linear dimensions, taller individuals with exactly the same body shape and relative composition have a larger BMI. This can partially explain the increase in the overweight diagnosis in the past 20 years, and the increase in sales of weight loss products during the same time. According to mathematician Nick Trefethen"BMI divides the weight by too large a number for short people and too small a number for tall people.

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Namespaces Page Talk. Because of this, the wiki have varied over the past few decades. Explore Wikis Community Central. Similarly, this is becoming more and more pertinent to the growth of children, due to the majority of their exercise habits. In this situation, BMI will increase without any corresponding increase in weight. Colours indicate BMI categories defined by the World Health Organization; underweightnormal weightoverweightmoderately obeseseverely obese and very severely obese. Accurate frame size calculators use several measurements wrist circumference, elbow width, neck circumference, and others to determine what category an individual falls into for a given height.

Nevertheless, due to its simplicity, it has come to be widely used for inddex diagnoses. In children and the elderly, differences in bone density and, thus, in the proportion of bone to total weight can mean the number at which these people are considered under weight should be adjusted downward. The weight excess or deficiency may, in part, be accounted for by body fat adipose tissue although other factors such as muscularity also affect BMI significantly see discussion below and overweight. Waist-to-hip circumference ratio has also been used, but has been found to be no better than waist circumference alone, and more complicated to measure.

  • MacKay Anuj Maradiya.

  • There are differing opinions on the threshold for being underweight in females, doctors quote anything from

  • Recent studies in England have indicated that females between the ages 12 and 16 have a higher BMI than males by 1. However, recent studies of American football linemen who undergo intensive weight training to increase their muscle mass show that they frequently suffer many of the same problems as people ordinarily considered obese, notably sleep apnea.

  • September

  • This is the body weight of the individual scaled according to the square of the height. It is meant to be used as a simple means of classifying sedentary physically inactive individuals with an average body composition.

A BMI that is less than the 5th percentile is considered underweight and above the 95th percentile is considered obese. BMI is less useful for finding out whether one person is too fat or too thin. Accurate frame size calculators use several measurements wrist circumference, elbow width, neck circumference, and others to determine what category an individual falls into for a given height. Explore Wikis Community Central. Dietary Guidelines have defined overweight at a variety of levels ranging from a BMI of Or to state the problem more accurately, the BMI measurements at which these people may be underweight, overweight or obese are different from for sedentary mesomorphs whose ages are between about 20 and The BMI depends upon weight and the square of height.

Faiza anwer. Men and women of the same height and weight have the same BMI. Recent studies in Britain have indicated that females between the ages 12 and 16 have a higher BMI than males of the same age by 1. A better measure was found to be the waist-to-height ratio. Latest Images Create New Article. Between and the U. According to mathematician Nick Trefethen"BMI divides the weight by too large a number for short people and too small a number for tall people.

BMI Calculator

BMI categories are generally regarded as a satisfactory tool for measuring whether sedentary individuals are massoverweightor obese with various exceptions, such as athletes, children, body mass index wiki elderly, and the infirm. However, this method again falls prey to the obstacle of body composition: many children who are generally born, or grow as an endomorphwould be classed as obese despite body composition. An Asian adult with a BMI of 23 or greater is now considered overweight and the ideal normal range is

  • The body mass index or BMI is a measure which shows whether people have the right weight for their height.

  • Waist-to-hip circumference ratio has also been used, but has been found to be no better than waist circumference alone, and more complicated to measure.

  • The optimal BMI was found to be in the range of This website uses cookies to improve your experience.

  • For example, this is the case in populations of Asian descent and older people. It is used as a simple means of classifying sedentary individuals according to their body fat content.

Body mass index wiki example, this wiii the case in populations of Asian descent and older people. The BMI depends upon weight and the square of height. The Health Board. The duality of the BMI is that, while it is easy to use as a general calculation, it is limited as to how accurate and pertinent the data obtained from it can be.

Archived from the original on November 22, BMI categories are generally regarded as a satisfactory tool for measuring whether sedentary individuals are underweightoverweightor obese with boxy exceptions, such as athletes, children, the elderly, and the infirm. For US adults, exponent estimates range from 1. Definitions of Body mass index. National Heart, Lung, and Blood Institute. The body mass index BMI or Quetelet Index is a measure of body weightthe weight of a person scaled according to height. The exponent 2 is used instead by convention and for simplicity.

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A frequent use of the BMI is to assess how much an individual's body weight departs body mass index wiki what is normal or desirable for a person of his or her height. The optimal BMI was found to be in the range of As a general rule, developed muscle contributes more to weight than fat and the BMI does not account for this.

Symptoms of Body mass index. Diagnostic studies for Body mass index. Be index wiki that both overweight and underweight can cause you to suffer from various illnesses. Asia Pacific Journal of Clinical Nutrition. From Wikipedia, the free encyclopedia. For example, many athletes have a high BMI. The Ponderal Index is similar to the body mass indexbut the height is cubednot squared.

Inthe U. Usage While the formula previously called the Quetelet Index for BMI dates to the 19th century, the new term "body mass index" for the ratio and its popularity date to a gody published in the July edition of in the Journal of Chronic Diseases by Ancel Keys, which found the BMI to be the best proxy for body fat percentage among ratios of weight and height;[3][4] the interest in measuring body fat being due to obesity becoming a discernible issue in prosperous Western societies. This is the body weight of the individual scaled according to the square of the height. This changed in Given the reservations detailed below concerning the limitations of the BMI as a diagnostic tool for individuals, the following are common definitions of BMI categories:. Integrated Authority File Germany.

Retrieved You can access it here: BMI Chart. Retrieved 16 December

  • Other people have lots of fat and not much muscle. This category only includes cookies that ensures basic functionalities and security features of the website.

  • The BMI may be determined using a table [note 1] or chart which displays BMI as a function of mass and height using contour lines or colours for different BMI categories, and which may use other units of measurement converted to metric units for the calculation. Body Mass Index values for males and females aged 20 and over, and selected percentiles by age: United States, —

  • In comparison, the Ponderal index is based on this natural scaling of mass with the third power of the height.

  • In children body mass index wiki the elderly, differences in bone density and, thus, in imdex proportion of bone to total weight can mean the number at which these people are considered under weight should be adjusted downward. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website.

Ashok Roy. Cookies help us deliver index wiki services. Close suggestions Search Search. Archived PDF from the original on The exponent 2 is used instead by convention and for simplicity. View source. However, BMI has become controversial because many people, including physicians, have come to rely on its apparent numerical authority for medical diagnosis, but that was never the BMI's purpose; it is meant to be used as a simple means of classifying sedentary physically inactive individuals with an average body composition.

Jump to Page. The dashed lines represent subdivisions within a major class. BMI values from Namespaces Home Page Discussion.

How is BMI Calculated

These recommended distinctions along the linear index wiki may vary from time to time and country to country, making global, longitudinal surveys problematic. You can access it here: BMI Chart. Faiza anwer. January The body mass index BMI provides a representation of body fat; the greater amount of body fat a person has, the higher the health risks.

  • You do not want to have any complications because you are obese or underweight.

  • A common use of the BMI is to assess how far an individual's body weight departs from what is normal or desirable for a person's height.

  • Human Nutrition — a health perspective. August

  • Athlepedia, The Athletics Wiki Explore. Niger J Health Sci.

Body mazs index Body mass index wiki or Quetelet Index is a statistical measure of the weight of a person scaled according to height. Diagnostic studies for Body mass index. Some professional athletes would be "overweight" or "obese" according to their BMI, despite them carrying little fat, unless the number at which they are considered "overweight" or "obese" is adjusted upward in some modified version of the calculation. Retrieved on June Retrieved

Individuals with a BMI over 27 are considered to be at a significantly greater risk of health problems than those under Given the reservations detailed below concerning the limitations of the BMI as a diagnostic tool for individuals, the following are common definitions of BMI categories:. A study published by Journal of the American Medical Association JAMA in showed that overweight people had a death rate similar to normal weight people as defined by BMI, while underweight and obese people had a higher death rate. This is the body weight of the individual scaled according to the square of the height. Chart showing body mass index BMI for a range of heights and weights in both metric and imperial.

In this situation, BMI will increase without any corresponding increase in weight. Categories A frequent use of the BMI is to assess how much an individual's body weight departs body mass index wiki what is normal or desirable for a person of his or her height. Retrieved 7 April However, BMI has become controversial because many people, including physicians, have come to rely on its apparent numerical authority for medical diagnosis, but that was never the BMI's purpose; it is meant to be used as a simple means of classifying sedentary physically inactive individuals with an average body composition.

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However, if the results show 30 and above, then the individual is said to be obese. You also have the option to opt-out of these cookies. This had the effect of redefining approximately 30 million Americans, previously "technically healthy" to "technically overweight". From Simple English Wikipedia, the free encyclopedia. In athletes, the problem is that muscle is denser than fat.

In parallel to this, sportsmen or women from sports such as Body mass index wikiwhere size and muscle are often of importance, could be listed as overweight, due to a large masx of muscle. These range boundaries apply to adults over 20 years of age. That causes them to believe that their high BMI is not indicative of large fat stores, and to discount the usefulness of the BMI as a screening tool. Body Composition Tests. BMI can be calculated quickly and without expensive equipment. A better measure was found to be the waist-to-height ratio.

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Faiza anwer. A BMI that is less than the 5th percentile is considered underweight body mass index wiki above the 95th percentile is overweight. Individuals with a BMI over 27 are considered to be at a significantly greater risk of health problems than those under In an analysis of 40 studies involvingpeople, patients with coronary artery disease with normal BMIs were at higher risk of death from cardiovascular disease than people whose BMIs put them in the overweight range BMI 25— However, many taller people are not just "scaled up" short people but tend to have narrower frames in proportion to their height [ citation needed ]. The duality of the Body Mass Index is that, whilst easy-to-use as a general calculation, it is limited in how accurate and pertinent the data obtained from it can be.

Inthe U. For example, the BMI of bodybuilder and eight-time Mr. As a general rule, developed muscle contributes more to weight than fat and the BMI does not account for this. BMI is less useful for finding out whether one person is too fat or too thin.

It is mmass clear where body mass index wiki the BMI scale the threshold for overweight and obese should be set. They are too fat but their BMI is normal. It was originally developed between and by the Belgian polymathAdolphe Quetelet during the course of developing "social physics". Namespaces Page Talk. In this situation, BMI will increase without any corresponding increase in weight.

  • Jennifer Souza Oficial. Nephrology, Dialysis, Transplantation.

  • Singapore BMI Cut-offs.

  • Body fat has been statistically linked to some health problems and trends, but again, this is often a spurious relationship and there are no simple proofs of health based on such measurement.

  • January For Asians,the new cut-off BMI index for obesity is

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Namespaces Article Talk. Zuluaga Llaned. Bdoy Korevaar a mathematics lecturer from en. Yang Sunman. The implications of this finding can be confounded by the fact that many chronic diseases, such as diabetes, can cause weight loss before the eventual death. James Stamp. To calculate BMI value in US units of measure, multiply weight in pounds bydivide by height in inches, then divide again by height in inches.

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Body mass index wiki wiki All wikis. Archived from the original on Accurate frame mase calculators use several measurements wrist circumference, elbow width, neck circumference, and others to determine what category an individual falls into for a given height. Medical underwriting In the United States, where medical underwriting of private health insurance plans is widespread, most private health insurance providers will use a particular high BMI as a cut-off point in order to raise insurance rates for or deny insurance to higher-risk patients, thereby reducing the cost of insurance coverage to all other subscribers in a 'normal' BMI range. The body mass index BMI or Quetelet Index is a measure of body weightthe weight of a person scaled according to height. Body weight Eating attitudes Health attitudes Weight control. BMI Calculator: [ [3] ].

It is also sometimes called the Quetelet index. One study found that BMI had a good general body mass index wiki with body fat percentage, and noted that obesity has overtaken smoking as the world's number one cause of death. If the results are between This is the latest accepted revisionreviewed on 15 July However, this method again falls prey to the obstacle of body composition: many children who are generally born, or grow as an endomorphwould be classed as obese despite body composition.

BMIs under 20 and over 25 have been associated with higher all-causes mortality, with the risk increasing with distance from the 20—25 range. April Female athletes who have very low BMIs 18 and below may be at risk of developing irregular menstrual cycles; additionally, females with low overall body weights may also be at greater risk of developing osteoporosis. Niger J Health Sci. However, many taller people are not just "scaled up" short people, but tend to have narrower frames in proportion to their height.

Generally, the Index is suitable for recognising trends within sedentary or overweight individuals because there is a smaller margin for errors [3]. Body mass index. At a weight of the BMI is The BMI is a convenient rule of thumb used to broadly categorize a person as underweightnormal weightoverweightor obese based on tissue mass musclefat, and bone and height. Wikipedia is a registered trademark of the Wikimedia Foundation, Inc.

A BMI that is less than the 5th percentile is considered body mass index wiki and above the 95th percentile is overweight. Faiza anwer. BMI for age percentiles for girls mss to 20 years of age. No law of physics or physiological growth is implied. Many will implement phased surcharges, in which the subscriber will pay an additional penalty, usually as a percentage of the monthly premium, for each arbitrary range of BMI points above a certain acceptable limit, up to a maximum BMI past which the individual will simply be denied admissibility regardless of price. Human Nutrition — a health perspective.

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Studies in Britain from have indicated that females between the ages 12 and 16 invex a higher BMI than males of the same age by 1. To calculate BMI value in US units of measure, multiply weight in pounds bydivide by height in inches, then divide again by height in inches. Body mass index calculations are not just for adults—they can also be used to identify the growing number of overweight children. The BMI depends upon weight and the square of height. Another issue is that competitive athletes often know very accurately what their actual height and weight are, while the general public has tendencies toward over-estimating their height, and under-estimating their weight.

However, the duality of body mass index wiki Body Mass Index is that, whilst easy-to-use as a general calculation, it is limited in how accurate and pertinent the data obtained from it can be. A frequent use of the BMI is to assess how much an individual's body weight departs from what is normal or desirable for a person of his or her height. Athlepedia, The Athletics Wiki Explore. Standard weight scales can delineate a person's total weight, but can't determine the lean-to-fat ratio of that weight. Colours indicate BMI categories defined by the World Health Organization; underweightnormal weightoverweightmoderately obeseseverely obese and very severely obese. Metabolic Syndrome.

In the United States, BMI is also used as a measure of underweight, owing to advocacy on behalf of those suffering with eating disorders, such as anorexia nervosa and bulimia nervosa. It was originally developed between and by the Belgian polymathAdolphe Aiki during the course of developing "social physics". The U. This results in taller people having a reported BMI that is uncharacteristically high, compared to their actual body fat levels. This does not seem to protect them from health issues associated with obesity, such as increased risk of heart disease and diabetes. A new formula for computing Body Mass Index that accounts for the distortions of the traditional BMI formula for shorter and taller individuals has been proposed by Nick Trefethen, Professor of numerical analysis at the University of Oxford : [56].

Editor-In-Chief: C. Lancet : The weight excess or deficiency may, in part, be accounted for by body fat adipose tissue although other factors such as muscularity also affect BMI significantly see discussion below and overweight.

BMI does not say how much weight is fat, how much is muscle and how much is bone. Other people have lots of fat plan not much muscle. Conversely, large framed or tall individuals may be quite healthy, with a fairly low body fat percentagebut be classified as overweight by BMI. BMI generally overestimates adiposity on those with more lean body mass e. Some experts suggest that the exponent should be between 2. Body mass index BMI is a common method used to assess body weight relative to height.

Body weight Eating attitudes Health attitudes Weight control. Index wiki all cases, methods for actually measuring body fat percentage are always preferable to BMI for measuring healthy body size. Also, there is often an assumption that athletic performance equals good health. A related indicator is waist circumference divided by height. Latest Images.

However, the duality of the Body Mass Index is that, whilst easy-to-use as a general calculation, it is index wiki in how accurate and pertinent the data obtained from it can be. Laura Mitchell. Commonly accepted BMI ranges are underweight under BMI provides a simple numeric measure of a person's thickness or thinnessallowing health professionals to discuss weight problems more objectively with their patients.

Wikimedia Commons. Clinical Trials on Body mass index at Google. What is Scribd? Studies in Britain from have indicated that females between the ages 12 and 16 had a higher BMI than males of the same age by 1.

  • August

  • Waist circumference is a good indicator of visceral fatwhich poses more health risks than fat elsewhere.

  • Bandolier on Body mass index.

  • Trichelle Mae Patalinghug. Men and women of the same height and weight have the same BMI.

The body mass index BMI or Quetelet Index is a measure of body weightthe weight of a person scaled according to height. In parallel to this, sportsmen or women from sports such as Rugbywhere size and muscle are often of importance, could be listed as overweight, due to a large amount of muscle. Powerpoint slides on Body mass index. Retrieved 9 July Body mass index BMI is a value derived from the mass weight and height of a person. Metabolic Syndrome.

Connecticut Medicine 70 2 : Children with a BMI between the 85th and 95th percentile are considered to be overweight. Some professional wki are "overweight" or "obese" according to their BMI - unless the number at which they are considered "overweight" or "obese" is adjusted upward in some modified version of the calculation. Create New Article. The study concluded that "the accuracy of BMI in diagnosing obesity is limited, particularly for individuals in the intermediate BMI ranges, in men and in the elderly. PMID

Help Learn to edit Community portal Recent changes Upload file. Close suggestions Search Search. Overweight is defined as a body mass index of Recent studies in Britain have indicated that females between the ages 12 and 16 have a higher BMI than males of the same age by 1.

For example, a chart may say the ideal weight for a man 5'10" cm is pounds 75 kg. This can lead to athletes masss a higher reported BMI than a lay person of the same height and weight. The medical establishment has generally acknowledged some shortcomings of BMI. The exponent in the denominator of the formula for BMI is arbitrary. This had the effect of redefining approximately 25 million Americans, previously "healthy" to "overweight". World Health Organization.

Children whose BMI is at 85th to 94th percentiles are said to be obese, invex can be due to the presence of more body fat or muscles. Milohssiny Naidu. There are differing opinions on the body mass index wiki for being underweight in females, doctors quote anything from Cancel Save. These range boundaries apply to adults over 20 years of age. Varying standards It is not clear where on the BMI scale the threshold for overweight and obese should be set. In children and the elderly, differences in bone density and, thus, in the proportion of bone to total weight can mean the number at which these people are considered under weight should be adjusted downward.

That causes body mass index wiki to believe that their high BMI is not indicative of large fat stores, and to discount the usefulness of the BMI as a screening tool. Standard weight scales can delineate a person's total weight, but can't determine the lean-to-fat ratio of that weight. In all cases, methods for actually measuring body fat percentage are always preferable to BMI for measuring healthy body size.

The current WHO and NIH ranges of normal weights are proved to be associated with decreased risks of some diseases such as diabetes type II; index wiki using the same range of BMI for men and women is considered arbitrary and makes the definition of underweight quite unsuitable for men. Waist-to-hip circumference ratio has also been used, but has been found to be no better than waist circumference alone, and more complicated to measure. In an analysis of 40 studies involvingpeople, heart patients with normal BMIs were at higher risk of death from cardiovascular disease than people whose BMIs put them in the "overweight" range BMI Metabolic Syndrome. This information helps the United States government decide what to do about the health of its people. Accurate frame size calculators use several measurements wrist circumference, elbow width, neck circumference, and others to determine what category an individual falls into for a given height. A better measure was found to be the waist-to-height ratio.

In athletes, the problem is that muscle is denser than fat. International variations These recommended distinctions along the linear scale may vary boy time to time and country to country, making global, longitudinal surveys problematic. Jump to Page. However, BMI has become controversial because many people, including physicians, have come to rely on its apparent numerical authority for medical diagnosis, but that was never the BMI's purpose. October

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