Among obese children (or a BMI-for-age greater than or equal to the 95th percentile), BMI is a good indicator of excess body fat. However, among overweight children (or a BMI-for-age between the 85th and 94th percentiles), elevated BMI levels can be a result of increased levels of either fat or fat-free mass.
Is BMI an accurate measure of obesity?
Estimations of body fat beyond BMI include measurements with calipers and waist-to-hip ratio measurements. However inaccurate, BMI is the most convenient way to classify body fat mass and obesity. There are, on the other hand, better methods to measure whole body fat levels.
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.
How accurate is BMI as a health indicator?
Beyond assigning one of these categories, a high BMI can be also an indicator of high body fat and therefore can be used to screen for certain weight levels that could lead to health problems. Even though it is often used as one, it is not a true diagnostic of body fatness or of an individual’s overall health.
Is BMI a good indicator of weight?
BMI can no longer be considered a reliable indicator of healthy weight, and further research is needed to identify a suitable alternative. Indicators of strength, fitness and central fat tissue are far more indicative of health than BMI.
What is better than BMI for measuring?
In current clinical practice, it is common to calculate BMI for an indication of whole-body fat and waist circumference for abdominal obesity. “Our research has shown that WHtR is a more accurate alternative to these two measures and also a more time-efficient measure.
What is the best measure of obesity?
- The most basic method, and the most common, is the body mass index (BMI). …
- The BMI and other so-called “field methods”-among them, waist circumference, waist-to-hip ratio, skinfold thicknesses, and bioelectrical impedance-are useful in clinics and community settings, as well as in large research studies.
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.
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 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.
What is a good BMI score?
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.
What is the most accurate BMI test?
DEXA / DXA Scan is widely considered as one of the most accurate and comprehensive body composition tests. The DEXA scan utilizes dual-energy X-ray absorptiometry (DXA). The test looks beyond your weight and the traditional body mass index (BMI).
What is my ideal weight and BMI?
Weight: Your BMI is , indicating your weight is in the category for adults of your height. For your height, a normal weight range would be from to pounds.
Adult BMI Calculator.BMIWeight StatusBelow 18.5Underweight18.5—24.9Normal25.0—29.9Overweight30.0 and AboveObese
Can you be overweight with muscle?
BMI isn’t perfect
It often identifies fit, muscular people as being overweight or obese. That’s because muscle is more dense than fat, and so weighs more. But muscle tissue burns blood sugar, a good thing, while fat tissue converts blood sugar into fat and stores it, a not-so-good thing.
Does breast size affect BMI?
BMI charts aren’t a great measure of health as they don’t take into account muscle mass or breasts. For instance, a body builder who is 10% bodyfat would likely come up as obese by BMI because it assumes weight is the only measure. … The chart shows volume of certain breast sizes in cubic centimeters.20 мая 2017 г.
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.