Why are BMIs useful ?

Body Mass Index ( BMI) CalculatorThe body mass index ( BMI) was created in the late nineteenth century (~1850s) by the Belgian Adolphe Quetelet , in the hope of identifying an easy screening method to measure one's weight as proportional to height. In the 20th century, when many societies were experiencing massive prosperity, and excess weight gain and obesity was linked to numerous diseases, the use of BMI became more popular as a risk factor for health for the population at large. Particularly the case of BMI is used as an indicator of body fat content . Based on the established thresholds (see below) it is an accurate measure of health status and risk factors in relation to weight. While the BMI is a straightforward and effective screening tool, we'll see that it is also afflicted by several limitations. So, any attempt to precisely interpret the BMI must be supervised by the primary care provider.Body mass index (BMI) equation

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The body mass index ( BMI) is calculated by measuring a person's mass in kg (kg) (kg) or pounds (lb) and also the subject's size in metres (m) (m) or inches (in). The BMI is then determined by dividing the weight of the person by the square of their height. Thus, weight is normalized to height. In the standard way, the calculated BMI is based on an SI units of kg/m ^2.. If the Imperial (English or U.S.) units of weight (pounds, pounds,) as well as height (inches inches, in) are utilized in the calculation, the value calculated must be multiplied by a conversion coefficient of 703.0704 in order to convert the units into kg/m. ^2..BMI threshold values Table 1. The body mass index (BMI) value thresholds

BMI (kg/m 2)	Weight Classification	Obesity Classification	Relative Risk of Disease
< 18.5	Underweight
18.5 - 24.9	Normal
25.0 - 29.9	Overweight		Increased
30.0 - 34.9	Obese	Obesity Class I	High
35.0 - 39.9	Obese	Obesity Class II	Very High
>= 40.0	Extremely overweight	Obesity Class III	Extremely high

Table 1 lists Table 1 lists the BMI values that are considered to be normal. "Normal" values are defined as the ones that are most closely associated with the longest life expectancy , and span between 18.5 up to 24.9 kg/m ^2.. The accumulation of excess body fat is usually linked to an increased risk of developing disease, and simultaneously, a decrease in life duration. A body mass index that is 20% higher than the optimal weight can increase the chance of developing conditions such like diabetic (diabetes mellitus type I) as well as hypertension and cardiovascular disease. Table 1 provides weight categories as well as the risk ratio of diseases that are associated with various BMI values.The BMI is only one of the many screening measures that have been designed to give a quantifiable measure of health. The waist circumference and the proportion of waist circumference and hips are also two additional measurements. Additionally, when evaluating the body's weight and health risk various other risk factors are considered, including high blood pressure and high LDL cholesterol and low HDL cholesterol and high triglycerides, as well as high blood glucose levels, the genetic factors that increase risk, inactivity, and smoking cigarettes. smoking.Adult BMI Calculator (for individuals aged 20 or older)Each calculator cell below corresponds to a particular term in the formula above. Input the appropriate values in every cell, excluding the one you want to determine. So, at the very least two cells should have values, and not more than one cell can be empty. In the case of blank cells, their value is determined based on the other values that are entered. It is also possible to reverse the calculations. For instance when using height and weight data in order to determine the BMI the height as well as the target BMI could be used to determine the ideal weight for that height. Also, though less practical, but equally useful, the weight and target BMI can be used to determine the ideal height for that weight.

SI / Metric Units (kg/m 2)

Imperial (English / U.S.) Units (lb/in 2)

Weight		G	kg
Height		cm	M
BMI		kilograms/m 2

The interpretation of BMI valueFirst of all the attempt to accurately determine the value of one's BMI must be supervised by the primary healthcare provider. There are a variety of situations where BMI values may be misleading and might not accurately reflect the body's fat content. A few are discussed below.

• BMI is a good indicator for adults, and is not an accurate screening tool for children or adolescents. For infants and young children, clinical growth charts are utilized to measure the body's weight. To determine BMI values for children and teenagers between the ages of 2 and 19 years old an alternative calculation is required to be carried out.
• BMI is quite high in extremely tall people.
• Some sportsmen (e.g., American football players) are more likely to have large BMI values in spite of the fact that they possess greater lean mass in their bodies than people of the same age and height, weight and body size.
• BMI thresholds that indicate a higher risk of diseases tend to be slightly lower for men than for women.