Is it a good indicator of health? Despite concerns that BMI doesn’t accurately identify whether a person is healthy, most studies show that a person’s risk of chronic disease and premature death does increase with a BMI lower than 18.5 (“underweight”) or above 30.0 (“obese”) ( 4 , 5 ).
Is BMI The best measurement of obesity and an accurate indicator of health?
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.
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).
What is the most accurate measure of obesity?
BMI remains the most commonly used, widely accepted, and practical measure of obesity in both children and adults, particularly for surveillance.
Is BMI or body fat percentage more accurate?
Body fat percentage distinguishes fat from muscle and calculates the percentage of body fat in the body. While BMI is a rough estimate of body fat, body fat percentage is a more accurate number.
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.
What is the measurement for obesity?
Adult Body Mass Index (BMI)
If your BMI is less than 18.5, it falls within the underweight range. If your BMI is 18.5 to <25, it falls within the healthy weight range. If your BMI is 25.0 to <30, it falls within the overweight range. If your BMI is 30.0 or higher, it falls within the obesity range.
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.
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.
What BMI measures?
Body Mass Index (BMI) is a person’s weight in kilograms divided by the square of height in meters. A high BMI can be an indicator of high body fatness. BMI can be used to screen for weight categories that may lead to health problems but it is not diagnostic of the body fatness or health of an individual.
What is more accurate than BMI?
WHtR is more accurate than BMI because it takes central fat into consideration. … Young adults should try to maintain a WHtR of at least 0.5 or lower. Measurements. Related to the WHtR are circumference measurements of various body parts, such as the arm, waist and leg.
How do you calculate accurate BMI?
To calculate your BMI, divide your weight in pounds by your height in inches squared, then multiply the results by a conversion factor of 703. For someone who is 5 feet 5 inches tall (65 inches) and weighs 150 pounds, the calculation would look like this: [150 ÷ (65)2] x 703 = 24.96.
What is the best way to measure body fat?
Here are the 10 best ways to measure your body fat percentage.
- Skinfold Calipers. …
- Body Circumference Measurements. …
- Dual-Energy X-ray Absorptiometry (DXA) …
- Hydrostatic Weighing. …
- Air Displacement Plethysmography (Bod Pod) …
- Bioelectrical Impedance Analysis (BIA) …
- Bioimpedance Spectroscopy (BIS)
Why is my body fat low but BMI high?
This is partially because muscle weighs more than fat, so if your body fat percentage is low, but you weigh more than what’s average for your height, your BMI could say that you are obese when you aren’t.
What is a good BMI percentage?
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.
How accurate is body fat percentage?
Accuracy: Accuracy varies, with an error rate that ranges from 3.8–5% body fat but may be higher or lower depending on the device used (3, 13 ). Instructional videos: Here are examples of inexpensive BIA devices with hand electrodes, foot electrodes and hand and foot electrodes.