Would you trust their answer? Probably not. The BMI Chart, also known as the Body Mass Index Chart, is about as reliable as the aforementioned blind person when it comes to measuring your state of health.
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).
Can you really trust BMI?
Body mass index is not specific to any particular health risk – and that’s its strength, experts say. However, a BMI above the healthy range or too much fat around the waist is known to increase the risk of serious health problems, including stroke and certain cancers.
Is BMI reliable or valid?
BMI is a reasonable indicator of body fat for both adults and children. Because BMI does not measure body fat directly, it should not be used as a diagnostic tool. Instead, BMI should be used as a measure to track weight status in populations and as a screening tool to identify potential weight problems in individuals.
Is BMI accurate if you are muscular?
A glob of muscle weighs about 18 percent more than the same size glob of fat. So, according to the BMI, the sprinter is more overweight than the sedentary person. But as I said earlier, a glob of muscle weighs about 18 percent more than the same size glob of fat, so this is clearly not an accurate statement.
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, 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.
What is the most attractive BMI?
These studies have found that a low waist to hip ratio (WHR) of approximately 0.7  and a low Body Mass Index (BMI; weight scaled for height) of approximately 18–19 kg/m2  are perceived as most attractive in female bodies, while a low waist to chest ratio (WCR) of approximately 0.7, and relatively high BMI ( …
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.
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 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 are the disadvantages of BMI?
BMI is also extremely cost-efficient, as calculations only take into account gender, height and weight. But as experts explain, BMI may be too simple. Since muscle weighs more than fat, BMI isn’t accurate in patients with extreme amounts of muscle.
Does age affect BMI?
For adults ages 20 years and older, BMI incorporates weight and height, but it does not take age or sex into account. A woman tends to have more body fat than a man with the same BMI. Likewise, an older person tends to have more body fat than a younger person with an equal BMI.
What does BMI 30 look like?
82.6 / (1.67 x 1.67) = 30
A BMI greater than 40 is considered morbidly obese; between 30-39.9 is considered obese; 25-29.9 is considered overweight; 18.5-24.9 is normal; and less than 18.5 is underweight.
Why do I weigh more than I look?
1. You have gained muscle mass. … Since dense muscle tissue takes up less space than fat, it’s possible you may weigh the same (or even more) yet appear slimmer than another person with the same weight, a similar height and frame because of the difference in your body composition.”
Does breast size affect BMI?
BMI is genetically correlated with breast size.