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#Bmi calculator with waist how to

If you're suffering from an eating disorder, the BMI calculator results do not apply. Your can use your BMI result as a starting point for further discussion with your GP about your weight and your general health.įind out more in How your GP can help and check out the Change4Life website for practical tips on staying healthy as a family. However, the BMI is a relatively straightforward and convenient method of assessing someone's weight.

adults who lose muscle as they get older may fall in the "healthy weight" range even though they may be carrying excess fat.

very muscular adults and athletes may be classed "overweight" or "obese" even though their body fat is low.

The adult BMI does not take into account age, gender or muscle mass.

The BMI can't tell the difference between excess fat, muscle, or bone. Your BMI can tell you if you're carrying too much weight but it can't tell if you're carrying too much fat. It is useful to consider BMI alongside waist. If you're concerned about your child's weight, contact your GP who may be able to refer you to your local healthy lifestyle programme for children, young people and families. Your body mass index, or BMI, is used to determine whether you are in a healthy weight range for your height. Measuring waist size is not routinely advised for children because it doesn't take their height into account. For example, a girl on the 75th centile is heavier than 75 out of 100 other girls her age. Find out more in very overweight childrenĪ child's BMI is expressed as a "centile" to show how their BMI compares to children who took part in national surveys. If you're concerned about your child's weight, see your GP.

#Bmi calculator with waist how to

Get tips on how to encourage your child to be more active and eat well healthy weight: between the 2nd and 91st centiles.underweight: on the 2nd centile or below.

The BMI calculator works out if a child or young person is: Although waist measurement alone was determined a good predictor of outcomes (better than BMI), the waist/hip ratio was significantly better than waist. Obese children are thought to be at increased risk of a variety of health conditions, and they're also more likely to be overweight or obese as adults. For children and young people aged two to 18, the BMI calculator takes into account age and gender as well as height and weight.