What is wrong with using BMI?

BMI (body mass index), which is based on the height and weight of a person, is an inaccurate measure of body fat content and does not take into account muscle mass, bone density, overall body composition, and racial and sex differences, say researchers from the Perelman School of Medicine, University of Pennsylvania.

What is a problem with BMI?

The main flaw: It’s an indirect measure of body fat that doesn’t take into account important details about age, sex, bone structure, and fat distribution, one study in the International Journal of Obesity explained. Again, it’s just two numbers: weight divided by height squared.

What are the disadvantages of using BMI?

BMI Doesn’t Account For Body Composition

The first — and biggest — disadvantage of BMI is that it doesn’t account for body composition. This means that if you’re very lean or muscular, your BMI results may not provide an accurate picture of your general health.

Is using BMI accurate?

Despite concerns that BMI doesn’t accurately identify whether a person is healthy, most studies show that a person’s risk of chronic disease and premature death does increase with a BMI lower than 18.5 (“underweight”) or above 30.0 (“obese”) ( 4 , 5 ).

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Why are BMI measurements controversial?

Since it doesn’t distinguish between weight from fat and weight from muscle or bone, BMI isn’t very accurate at judging how much body fat people have – which is the key issue when it comes to preventing weight-influenced diseases such as diabetes, heart disease and cancer.

What BMI should I be at?

Adult BMI Calculator

BMI Weight Status
Below 18.5 Underweight
18.5—24.9 Normal
25.0—29.9 Overweight
30.0 and Above Obese

Why do doctors still use BMI?

Body Mass Index Is a Good Gauge of Body Fat

The most basic definition of overweight and obesity is having too much body fat-so much so that it “presents a risk to health.” (1) A reliable way to determine whether a person has too much body fat is to calculate the ratio of their weight to their height squared.

Is a BMI of 29.2 good?

BMI ranges

below 18.5 – you’re in the underweight range. between 18.5 and 24.9 – you’re in the healthy weight range. between 25 and 29.9 – you’re in the overweight range. between 30 and 39.9 – you’re in the obese range.

Why BMI is inaccurate and misleading?

BMI (body mass index), which is based on the height and weight of a person, is an inaccurate measure of body fat content and does not take into account muscle mass, bone density, overall body composition, and racial and sex differences, say researchers from the Perelman School of Medicine, University of Pennsylvania.

Does Big Bones affect BMI?

Big bones don’t mean (much) extra weight

“It’s not going to be the difference between a healthy body mass index (BMI) and being overweight.” Some people might confuse bone size with bone density, which refers to the concentration of minerals in your bones.

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What is the ideal BMI for a woman?

If your BMI is between 18.5-24.9: Your BMI is considered normal. This healthy weight helps reduce your risk of serious health conditions and means you’re close to your fitness goals. If your BMI is between 25-29.9: Your BMI is considered overweight. Being overweight may increase your risk of cardiovascular disease.

What is more accurate than BMI?

Body Adiposity Index

In order to work out your percentage body fat, BAI multiplies your hip circumference by your height. Although clinical studies have not shown any proof, it is widely believed that Body Adiposity Index is more accurate than BMI as the resulting figures are approximate.

What is the BMI for overweight category?

If your BMI is less than 18.5, it falls within the underweight range. If your BMI is 18.5 to <25, it falls within the normal. If your BMI is 25.0 to <30, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obesity range.

Who set the BMI standards?

The BMI was introduced in the early 19th century by a Belgian named Lambert Adolphe Jacques Quetelet. He was a mathematician, not a physician. He produced the formula to give a quick and easy way to measure the degree of obesity of the general population to assist the government in allocating resources.

Nutritionist