![]() ![]() According to Lars Grue and Arvid Heiberg in the Scandinavian Journal of Disability Research, Quetelet's idealization of the average man would be elaborated upon by Francis Galton a decade later in the development of Eugenics. Quetelet thought of the average man as a social ideal, and developed the body mass index as a means of discovering the socially ideal human person. Instead, it was a component of his study of l'homme moyen, or the average man. Quetelet himself never intended for the index, then called the Quetelet Index, to be used as a means of medical assessment. Īdolphe Quetelet, a Belgian astronomer, mathematician, statistician, and sociologist, devised the basis of the BMI between 18 as he developed what he called "social physics". When used to predict an individual's health, rather than as a statistical measurement for groups, the BMI has limitations that can make it less useful than some of the alternatives, especially when applied to individuals with abdominal obesity, short stature, or high muscle mass.īMIs under 20 and over 25 have been associated with higher all-cause mortality, with the risk increasing with distance from the 20–25 range. Major adult BMI classifications are underweight (under 18.5 kg/m 2), normal weight (18.5 to 24.9), overweight (25 to 29.9), and obese (30 or more). The BMI is a convenient rule of thumb used to broadly categorize a person as based on tissue mass ( muscle, fat, and bone) and height. The table may also show contour lines or colours for different BMI categories. The table displays BMI as a function of mass and height and may show other units of measurement (converted to metric units for the calculation). The multiplication and division may be carried out directly, by hand or using a calculator, or indirectly using a lookup table (or chart). ![]() The BMI may be determined first by measuring its components by means of a weighing scale and a stadiometer. The BMI is defined as the body mass divided by the square of the body height, and is expressed in units of kg/m 2, resulting from mass in kilograms (kg) and height in metres (m). Hence, it is crucial to be aware of your BMI to ensure your overall wellness.Body mass index ( BMI) is a value derived from the mass ( weight) and height of a person. Often people with a higher BMI need higher doses. Many healthcare professionals use BMI to determine effective doses for medicines. You can use a BMI calculator to find out your BMI.Īlthough not an exact measurement of body fat percentage, in most cases, BMI is a reliable tool for establishing risk levels for illnesses, especially ailments related to excess body fat. It correlates your weight with your height and evaluates whether your weight is appropriate for your stature. How then do you know whether you fall in the healthy weight range or not? Your BMI solves this confusion. The ideal weight is also likely to differ for men and women of similar heights. But the former may enjoy better health as long as their weight is suitable for their height. For example, a tall but slender person can weigh more than a short but plump individual. ![]() Your weight alone is not sufficient to establish if you are in a healthy weight range. ![]() Introduction to the body mass index (BMI)īody Mass Index (BMI) is widely used as an indicator of body fat content. ![]()
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