Body mass index is a common measure of body weight, but for certain people, it’s not an accurate health marker. Many people have been there: You go to the doctor’s office, get your blood pressure, height, and weight taken, and the doctor relays the unfortunate news: Your BMI is too high, and you need to lose weight.
Is BMI an accurate indicator of health?
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 ).
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).
Is the body mass index BMI a good indicator of health Why or why not?
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.
Does BMI actually matter?
To put it simply: You can be totally healthy with a higher BMI. Conversely, you can be unhealthy with an average or lower BMI. Schuchmann explains that those with more muscle mass, think athletes and bodybuilders, will have a higher BMI. “Muscle weighs more than fat.
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 my ideal weight for my height and age?
Weight and height guide chart
|5ft 1″ (61″)||100 to 127 lbs.||132 to 153 lbs.|
|5ft 2″ (62″)||104 to 131 lbs.||136 to 158 lbs.|
|5ft 3″ (63″)||107 to 135 lbs.||141 to 163 lbs.|
|5ft 4″ (64″)||110 to 140 lbs.||145 to 169 lbs.|
What are the problems with using BMI?
According to the National Institutes of Health, “The higher your BMI, the higher your risk for certain diseases such as heart disease, high blood pressure, type 2 diabetes, gallstones, breathing problems, and certain cancers.” That’s why doctors are inclined to use this measure of overweight and obesity with patients.
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.
Can BMI be trusted?
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.
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 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.
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 weight do I need to be to have a BMI of 25?
A man who is 5 ft. 10 in. tall is considered overweight (BMI is 25 to 29) if he weighs between about 174 and 202 pounds, and is obese (BMI is 30 or more) if he is closer to 209 pounds or more.
How bad is a BMI of 28?
Here’s how the BMI ranges are categorized: Underweight is a BMI less than 18.5. Normal weight is a BMI between 18.5 and 24.9. Overweight is a BMI of 25 to 29.9.
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.