How was the BMI scale developed?
BMI is derived from a simple math formula. It was devised in the 1830s by Lambert Adolphe Jacques Quetelet, a Belgian astronomer, mathematician, statistician and sociologist. It aims to estimate whether a person has a healthy weight by dividing their weight in kilograms (kg) by their height in meters squared.
Where did the BMI chart come from?
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.
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.
When did BMI scales change?
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.
Why is my BMI outdated?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.
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.
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 should I use instead of BMI?
Better than BMI: 4 ways to track your health besides the scale
- Waist-to-height ratio (WHtR) The cousin of the BMI, waist-to-height ratio compares — you guessed it — waist circumference to height, rather than overall weight to height squared. …
- Measurements. …
- Resting heart rate (RHR) …
- Skinfold Calipers.
Who should not use BMI?
A person is considered underweight if the BMI is less than 18.5. As with most measures of health, BMI is not a perfect test. For example, results can be thrown off by pregnancy or high muscle mass, and it may not be a good measure of health for children or the elderly.
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.
Is the BMI chart realistic?
It doesn’t give you a good estimate of how much body fat you’re carrying around. It can differ drastically based solely on your gender. For example, a man and a woman with an identical body-fat percentage could have widely different BMIs. Just because you have a high BMI doesn’t necessarily mean you’re overweight.
Can you change your BMI?
The good news is, relatively small changes in your weight can give you dramatic improvements in your health. To lose weight, and lower your BMI, you’ll need a program that you can stick with long term. Below are some tips for making changes to your diet, exercise, and general lifestyle that you can continue over time.1 мая 2018 г.
Is BMI a good health indicator?
BMI is a useful indicator of health at the population level. However, the distribution of fat on your body is more important that the amount, when assessing your disease risk. For this reason, your waist circumference is thought to be a better predictor of health risk than your BMI.
What is a good BMI?
For most adults, an ideal BMI is in the 18.5 to 24.9 range. For children and young people aged 2 to 18, the BMI calculation takes into account age and gender as well as height and weight. If your BMI is: below 18.5 – you’re in the underweight range.