Body mass index (BMI) is the recommended method for diagnosing overweight and obesity. It evaluates the relationship between body weight and height. While BMI is not a direct measure of excess body fat, it expresses the weight-height relationship and provides a more accurate measure than body weight alone.
Why is a BMI important?
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.
What does BMI tell us about?
Doctors often use BMI as an objective indicator of whether a person is overweight, underweight, or at a healthy weight. BMI helps determine someone’s overall health risk and what treatment may be appropriate. It is also used to determine weight loss strategies, including whether weight loss surgery is indicated or not.
What is a good body mass index?
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.
Is BMI a useful measure of health?
BMI is a useful indicator of health at the population level. However, the distribution of fat on your body is more important that the amount, when assessing your disease risk. For this reason, your waist circumference is thought to be a better predictor of health risk than your 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.
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.
What does your BMI indicate about your weight?
BMI stands for Body Mass Index
This is a numerical value of your weight in relation to your height. A BMI between 18.5 and 25 kg/m² indicates a normal weight. A BMI of less than 18.5 kg/m² is considered underweight. A BMI between 25 kg/m² and 29.9 kg/m² is considered overweight.
What BMI Cannot tell you?
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.
What can your BMI tell you about your body answers?
A common measurement is your body mass index, or BMI. A BMI score is the relationship between height and weight and it can help identify your risk for obesity-related diseases.
What is my ideal weight for my age?
Weight and height guide chart
|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.|
|5ft 5″ (65″)||114 to 144 lbs.||150 to 174 lbs.|
How do I determine my ideal weight?
It is calculated according to BMI = weight/height² . The optimal, healthy range for BMI is between 18.5 and 24.9. Our ideal weight calculator converts this back into weight, presenting to you the range of appropriate weights for your height.
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.
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.
Does age affect your BMI?
Share on Pinterest BMI incorporates height and weight but not body composition, fitness, age, or sex. For adults ages 20 years and older, BMI incorporates weight and height, but it does not take age or sex into account.
Are there any problems with using BMI as an indicator of health?
Research has shown that individuals with a higher BMI are more likely to experience obesity-related health problems. Although some debate continues about whether different categories should exist for specific subgroups (such as Asians), these BMI categories are used worldwide for all adults 20 years and older.