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This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Relative weight based on mass and height Medical diagnostic method Body mass index (BMI) Chart showing body mass index (BMI) for a range of heights and weights in both metric and imperial. Colours indicate BMI categories defined by the World Health Organization ; underweight, normal ...
In total, there are four BMI ranges and categories that apply to all adults — both men and women — aged 20 and older: Photodjo / iStock How to Calculate Body Fat Percentage
BMI is an accurate reflection of body fat percentage in the majority of the adult population. However it is less accurate in people such as body builders and pregnant women. [13] A formula combining BMI, age, and gender can be used to estimate a person's body fat percentage to an accuracy of 4%. [14]
Overweight is defined as a BMI of 25 or more, thus it includes pre-obesity defined as a BMI between 25 and 29.9 and obesity as defined by a BMI of 30 or more. [ 4 ] [ 5 ] Pre-obese and overweight however are often used interchangeably, thus giving overweight a common definition of a BMI of between 25 and 29.9.
While BMI is the most basic and commonly used indicator of obesity, other measures include waist circumference, waist-to-hip ratio, skinfold thicknesses, and bioelectrical impedance. [11] The rate of obesity increases with age at least up to 50 or 60 years old. [12] Sex- and gender-based differences also influence the prevalence of obesity.
BRI had similar accuracy in predicting percentage body fat and percentage fat volume as existing indices, such as the BMI. [1] As the conventional index associated with obesity research, the BMI has numerous drawbacks, as it is unable to distinguish between muscle and fat, is inaccurate in predicting body fat percentage, and has poor ability to ...