Best answer: Why is the BMI flawed?

BMI doesn’t scale well. A tall man with the exact same build and body composition as a shorter man will have a higher BMI. Secondly, the measure ignores variation in body shapes.

Why is BMI not accurate?

Is BMI accurate? While doctors appreciate the statistical nature of BMI, the problem with it is that it can focus too much on the numbers. As a result, your BMI doesn’t take into account vital information that can contribute to or detract from your overall health.

What are some flaws of the 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 BMI really accurate?

Even though it is often used as one, it is not a true diagnostic of body fatness or of an individual’s overall health. As most of us fitness-focused folks have likely heard, BMI is far from a perfect measurement.

Why is BMI not a good measure of one’s body composition?

That said, BMI is not a perfect measure because it does not directly assess body fat. Muscle and bone are denser than fat, so BMI can overestimate body fat in athletes with high bone density and muscle mass or underestimate it in older people who have low bone density and muscle mass.

What is the healthiest BMI?

According to the National Institutes of Health (NIH): A BMI of less than 18.5 means that a person is underweight. A BMI of between 18.5 and 24.9 is ideal. A BMI of between 25 and 29.9 is overweight.

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 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.

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.

Is a BMI of 14 bad?

A person with a BMI of 10 or 11 is definitely skinny, but probably OK if they have a small frame. A BMI of 12-13 is good for a person with an average build, and a large-framed person would still be healthy with a BMI of 14. Past that, unless you’re a super muscular athlete, you probably need to lose a few pounds.

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 ideal BMI for a woman?

If your BMI is between 18.5-24.9: Your BMI is considered normal. This healthy weight helps reduce your risk of serious health conditions and means you’re close to your fitness goals. If your BMI is between 25-29.9: Your BMI is considered overweight. Being overweight may increase your risk of cardiovascular disease.

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

What is better BMI or body fat?

While BMI is a rough estimate of body fat, body fat percentage is a more accurate number. BMI, but not overfat. Likewise, a person of normal weight on the BMI scales may still be overfat and at risk of weight-related diseases.

What is importance of BMI?

Your BMI is a measurement that is a ratio of your weight and height. It’s a good way to gauge whether your weight is in healthy proportion to your height. In fact, knowing your BMI can help you – and your GP – determine any health risks you may face if it’s outside of the healthy range.

Does ideal BMI change with age?

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.