What does body mass index (BMI) determine?

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  1. Weight Watchers®
     
    Weight Watchers® answered:

    Body mass index (BMI) is a measurement that evaluates the relationship between body weight and height. While BMI is not a direct measure of excess body fat, it is the recommended method to diagnose overweight and obesity. Because it expresses the weight-height relationship, BMI provides a more accurate measure than body weight alone.
     
    If your BMI is in the range of overweight or obese, your risk of chronic illness and death increases.

    Because of the links between BMI and health risks, Weight Watchers bases its healthy weight ranges on BMI.

    Weight Watchers can help you reach a healthy range. Learn more about Weight Watchers and how to join.

    Helpful? 10 people found this helpful
    More Related Answers from Weight Watchers®
    Body mass index (BMI) is a measurement that evaluates the relationship between body weight and height. While BMI is not a direct measure of excess body fat, it is the recommended method to diagnose overweight and obesity. Because it expresses the... More
  2.  Alberto Gamboa - NASM Elite Trainer
     

    Ideal Weight Calculator (Body Mass Index) is a reliable indicator of your body’s fitness level, and most importantly, your health risk. It works by calculating your weight and height by correlating it to your fat level.

    To use a calculator to deturmine your BMI, go to: 

    http://www.weight-loss-plans-4-you.com/ideal-weight-calculator.html

    • Adults with a BMI between 25 and 29.9 are considered overweight, but health practitioners consider this to be low risk, since some amount of fat reserve is needed for energy. This extra energy can be helpful during severe, chronic illness or stress.
    • Adults with a BMI between 30 to 34.9 are considered obese and have a greater risk of chronic diseases like cancer, diabetes and heart attacks. You also have an increased chance of dying by 40% according to the New England Journal of Medicine.
    • Adults with a BMI above 35 are considered to be morbidly obese and have an increased chance of death by 250%! If your BMI is high, don’t let the numbers overwhelm you. The important consideration is that you’re going to take control of your health today!
    For more information, go to: http://www.weight-loss-plans-4-you.com
    Helpful? 6 people found this helpful
    More Related Answers from Alberto Gamboa - NASM Elite Trainer
    Ideal Weight Calculator (Body Mass Index) is a reliable indicator of your body’s fitness level, and most importantly, your health risk. It works by calculating your weight and height by correlating it to your fat level. To use a calculator to... More
  3. National Academy of Sports Medicine
     
    BMI does not calculate body fat percentage; it merely determines whether your weight is in a healthy range based on your height.  Larger BMI values are associated with an increased risk for many health complications. 
    Helpful? 2 people found this helpful
    More Related Answers from National Academy of Sports Medicine
    BMI does not calculate body fat percentage; it merely determines whether your weight is in a healthy range based on your height.  Larger BMI values are associated with an increased risk for many health complications.  More
  4. Mr. Joe Brandow
     
    Mr. Joe Brandow answered:
    BMI is considered an overall indicator of ideal body weight. BMI indicates a healthy range of body weight based on height. BMI does not include other factors that indicate a person's health such as body fat percentage versus lean muscle mass, eating habits and exercise.
    Helpful? 2 people found this helpful
    More Related Answers from Mr. Joe Brandow
    BMI is considered an overall indicator of ideal body weight. BMI indicates a healthy range of body weight based on height. BMI does not include other factors that indicate a person's health such as body fat percentage versus lean... More
  5.  Eric Beard - NASM Expert
     

    Body Mass Index (BMI) testing is a method of estimating a person's body fat levels based upon a person's weight and height.

    BMI is a number calculated from the relationship between a person's weight and height. A BMI number or "score" places individuals in weight categories. These categories can range from severely underweight to morbidly obese.

    Having a low BMI can place someone at risk for the following health conditions and diseases; osteoporosis, impaired immune system function, amenorrhea, cardiac abnormalities and more. Obesity and morbidly obesity, or having a high BMI score are risk factors for;  blood (fat) lipid abnormalities, cancer, including cancer of the uterus, cervix, ovaries, breast, colon, rectum and prostate, depression, gallbladder disease, gynecological problems, such as infertility and irregular periods, heart disease, high blood pressure, metabolic syndrome, nonalcoholic fatty liver disease, osteoarthritis, skin problems, such as intertrigo and impaired wound healing, sleep apnea, stroke, type 2 diabetes according to the Mayo Clinic.

    Below 18.5 = Underweight

    18.5 – 24.9 = Normal

    25.0 – 29.9 = Overweight

    30.0 and Above = Obese


    Helpful? 2 people found this helpful
    More Related Answers from National Academy of Sports Medicine
    Body Mass Index (BMI) testing is a method of estimating a person's body fat levels based upon a person's weight and height.BMI is a number calculated from the relationship between a person's weight and height. A BMI number or "score" places... More
  6. Dr. Merle Myerson
     
    Dr. Merle Myerson answered:

    Cardiovascular specialist Dr. Merle Myerson discusses body mass index (BMI) and what it determines. Watch Dr. Myerson's video for important tips and information about heart health.





    More Related Answers from Dr. Merle Myerson
    Cardiovascular specialist Dr. Merle Myerson discusses body mass index (BMI) and what it determines. Watch Dr. Myerson's video for important tips and information about heart health. More
  7. Mrs. Marjorie Nolan Cohn
     

    For adults, overweight and obesity ranges are determined by using weight and height to calculate a number called the "body mass index" (BMI). BMI is used because, for most people, it correlates with their amount of body fat.

    It is important to remember that although BMI correlates with the amount of body fat, BMI does not directly measure body fat. As a result, some people, such as athletes, may have a BMI that identifies them as overweight even though they do not have excess body fat. For more information about BMI, visit Body Mass Index.

    More Related Answers from Academy of Nutrition and Dietetics
    For adults, overweight and obesity ranges are determined by using weight and height to calculate a number called the "body mass index" (BMI). BMI is used because, for most people, it correlates with their amount of body fat. It is important to... More