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 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 do I know if my BMI is accurate?
Adult Body Mass Index or BMI
- If your BMI is less than 18.5, it falls within the underweight range.
- If your BMI is 18.5 to 24.9, it falls within the normal or Healthy Weight range.
- If your BMI is 25.0 to 29.9, it falls within the overweight range.
- If your BMI is 30.0 or higher, it falls within the obese range.
Is BMI a realistic measure?
If you fall between 18.5 and 24.9, you’re considered normal, while a BMI of 30 or higher qualifies as overweight. But in recent years, more researchers argue that it’s not the most accurate way to measure body weight. … BMI cannot take into consideration, for example, where the body holds fat.
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.
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 my ideal weight for my age?
Weight and height guide chartHeightWeight5ft 3″ (63″)107 to 135 lbs.141 to 163 lbs.5ft 4″ (64″)110 to 140 lbs.145 to 169 lbs.5ft 5″ (65″)114 to 144 lbs.150 to 174 lbs.5ft 6″ (66″)118 to 148 lbs.155 to 179 lbs.Ещё 17 строк
What is healthy BMI for female?
Adult BMI CalculatorBMIWeight StatusBelow 18.5Underweight18.5—24.9Normal25.0—29.9Overweight30.0 and AboveObese
What are the disadvantages of BMI?
Disadvantages of BMI
BMI is a simple mathematical formula that measures body fat based on your height and weight. It does not take into account the source of the weight – whether it is from lean tissue or fat. BMI does not distinguish between the type of fat one carries – whether it is subcutaneous or visceral fat.
How do you calculate BMI with body fat percentage?
This calculation has been shown to slightly overestimate body fat percentage in people who are very overweight. Take your BMI result from Step 3 and plug it into the appropriate formula below to calculate your body fat percentage. Women: (1.20 x BMI) + (0.23 x Age) – 5.4 = Body Fat Percentage.
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.
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.
What should your BMI be?
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 weight do I need to be to have a BMI of 25?
tall is considered overweight (BMI is 25 to 29) if she weighs between about 145 and 169 pounds. She is considered obese (BMI is 30 or more) if she is closer to 174 pounds or more. A man who is 5 ft.