You’ve probably heard the term BMI (body mass index). It’s based on your height and weight, and it’s widely used to determine if you’re in a healthy weight range. But as it turns out, BMI may not be the best way to size up your shape.
Why BMI is inaccurate and misleading?
Body Mass Index’ biggest flaw is that it does not take into account the person’s body fat versus muscle (lean tissue) content. Muscle weighs more than fat (it is denser, a cubic inch of muscle weighs more than a cubic inch of fat). … A BMI calculation would class both of them as overweight.
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.
Why the BMI is wrong?
BMI does not measure body fat percentage
One of the main issues with BMI is that it cannot account for the difference between muscle and fat. Because muscle tissue is more dense than fat, many athletes and bodybuilders are considered overweight according to BMI despite being in peak athletic health.
What does my BMI mean?
Body Mass Index (BMI) is a person’s weight in kilograms divided by the square of height in meters. A high BMI can indicate high body fatness. BMI screens for weight categories that may lead to health problems, but it does not diagnose the body fatness or health of an individual.
Who should not use BMI?
Furthermore, a low BMI (below 18.5) is also linked to poor health outcomes. That said, BMI fails to consider other aspects of health, such as age, sex, fat mass, muscle mass, race, genetics, and medical history.
Why do doctors still use BMI?
Body mass index, or BMI, has been used for over 100 years to help health professionals decide whether a patient is overweight or underweight. It is used in population studies, by doctors, personal trainers, and others.
Is WHR a better indicator than BMI?
WHR is an easy, inexpensive, and accurate way to see how much body fat you have. It can also help predict your risk for heart disease and diabetes. A few studies suggest that WHR is even more accurate than BMI for predicting the risks of cardiovascular disease and premature death .
How accurate is BMI if you are muscular?
There are a myriad of reasons why BMI isn’t as accurate a measure of health as many of us were brought up to believe, but one of the main ones is that BMI can’t distinguish between fat and muscle. A pound of fat takes up a much larger volume on the body than a pound of muscle, even though they of course weigh the same.
Is a BMI of 17.5 bad?
The American Dietetic Association (ADA) defines the ideal body mass index (BMI) as between 20 and 25. Thus, anyone below that range would be considered underweight and those with a BMI from 18.5 to 17.5 extremely underweight.
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.
Can BMI be trusted?
As most of us fitness-focused folks have likely heard, BMI is far from a perfect measurement. Much of the time, and often when it really counts, the BMI measurement may actually overestimate or even underestimate a person’s body fat. And when it does, it really does.
Does breast size affect BMI?
BMI is genetically correlated with breast size.
Is a BMI of 20.97 good?
A normal BMI ranges from 18.5 to 24.9. Overweight is defined as having a BMI of 25 to 29.9. A BMI equal or greater than 30 is considered obese.
Is a BMI of 19.7 good?
A BMI between 25 to 29.9 is considered overweight. Anything over 30 is considered obese. Normal BMI is between 18.5 and 24.9.
Is a BMI of 22.92 good?
A BMI of 25 to 29.9 is considered overweight. A BMI of 30 and above is considered obese. Individuals who fall into the BMI range of 25 to 34.9, and have a waist size of over 40 inches for men and 35 inches for women, are considered to be at especially high risk for health problems.