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.
What is BMI intended for?
In general, the higher the number, the more body fat a person has. BMI is often used to determine if your weight might be putting you at risk for health problems such as heart disease, diabetes, and cancer. BMI is calculated by dividing a person’s weight in kilograms by the square of their height in meters.
What is the BMI formula and why do we use it?
BMI is short for “Body Mass Index.” It is simply a number calculated from a person’s height and weight. The more a person weighs in relation to their height, the higher their BMl. The formula used to calculate BMI is weight divided by height squared, and it is usually calculated in kg/meter2.
When was the BMI scale invented?
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.
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.
What is the best BMI for a woman?
Doctors consider a healthy BMI for women to be 18.5–24.9. A BMI of 30 or above may indicate obesity. BMI measurements can help someone understand whether they have underweight or overweight.
What should my BMI be for my age?
A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight. A BMI over 30 indicates obesity.
Is a BMI of 26 OK?
Someone with a BMI of 26 to 27 is about 20 percent overweight, which is generally believed to carry moderate health risks. A BMI of 30 and higher is considered obese. The higher the BMI, the greater the risk of developing additional health problems. A healthy weight is considered to be a BMI of 24 or less.
Is BMI a good health indicator?
As a single measure, BMI is clearly not a perfect measure of health. But it’s still a useful starting point for important conditions that become more likely when a person is overweight or obese.
Why is my BMI outdated?
Body Mass Index (BMI) is a highly controversial health assessment tool designed to estimate a person’s body fat and risk of poor health. Research typically shows a greater risk of chronic disease as BMI increases above the “normal” range. Furthermore, a low BMI (below 18.5) is also linked to poor health outcomes.
Why is my BMI so high?
Muscles are denser and heavier than body fat, so if you have high muscle mass, your BMI might indicate that you’re overweight or obese. BMI treats a person’s weight as one entity, instead of accounting for muscles, bone density and fat, which all make up a person’s weight.
What is overweight for my height?
A result between 18.5 and 24.9 means you’re in the “normal” weight range for your height. If your result is under 18.5, you’re considered underweight. Between 25 and 29.9 means you’re considered overweight.
What are the problems with using 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.
Why is my BMI so high but not fat?
Muscle mass can make you heavier and increase your BMI.
Because muscles are more dense and heavier than fat, bodybuilders and other professional athletes like football players are often considered obese or overweight based on their BMI alone. If you have high muscle composition, you’re probably not overweight or obese.
What is more accurate than BMI?
Waist-to-height ratio more accurate than BMI in identifying obesity, new study shows. Summary: Calculating a person’s waist-to-height ratio is the most accurate and efficient way of identifying whether or not they are at risk of obesity in clinical practice, a new study shows.