Most Commonly Asked Questions About Bmi

The BMI (Body Mass Index) is the most commonly used measure for healthy weight for height. It certainly gives a quick ball park figure of if your weight is in a healthy range. Here are answers to some of the common questions on BMI.

How do I calculate my BMI?

BMI = weight (kg) / height (m)2

What is an example of calculating BMI?

Jenny is 165cm tall and weighs 65. Her BMI is:

BMI = 65/(1.65×1.65)

= 23.9

What should my BMI be?

Your BMI should fall into the range of 18.5 to 25. Above 25 is considered overweight and above 30 is considered obese.

What does it mean if my BMI is above 25?

There is no need to panic if your BMI is above 25, it just means you are strongly encouraged to lose weight. For BMI’s above 25 health issues such as heart disease, stroke, diabetes and cancers start to become more apparent.

I have a thick frame, will this affect my BMI?

It certainly will. You need to take your BMI measurement with a grain of salt as well. Many athletes with a high level of muscle will find they have a high BMI. A better measure is to have your body fat % measured, which can be done at most gyms. So some people will naturally have a higher BMI as they have a heavier frame.

If BMI is not always accurate why do so many people use it?

BMI is the quickest method we have to make broad assessments on people’s weight. Over a large cross section of people BMI readings are a very good indication, however on an individual level BMI can vary depending on frame size.

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