Body Mass Index (BMI)

The Body Mass Index or BMI, is the ratio of your weight and height (squared) which is considered to be a reasonable measure of a healthy, or otherwise, body weight.

In some respects, it is a rather “blunt” tool as it fails to take into account a number of variables that influence BMI and which might not be considered to be good markers of an unhealthy or healthy body weight.

For example, muscle mass is not taken into account when making the calculation and as muscle weighs more than fat, athletes could be classified as being “over weight” even with a very low body fat percentage.

Furthermore, a BMI calculation is unsuitable in the case of eating disorders which should always be addressed by suitably qualified professionals.

Whilst a BMI calculation is limited in absolute terms, it remains a useful tool as an indicator of morphological health.

Supplied by BMI Calculator UK

How the BMI is calculated?

The BMI calculation divides an adult’s weight in kilograms (kg) by their height in metres (m) squared.

For example, if you weigh 70kg (around 11 stone) and are 1.73m (around 5 feet 8 inches) tall, you work out your BMI by:

  1. Squaring your height: 1.73 x 1.73 = 2.99
  2. Then, dividing 70 by 2.99 = 23.41

BMI results are normally reported to one decimal place and so in this case, the BMI would be 23.4 which is classified as a “healthy” weight.

Should I Opt for HypnoBand?

In general terms, we do not recommend the use of the Hypnoband weight loss system for people with a BMI lower than 25.

Remember, the HypnoBand system is designed to HELP you to take control of your eating habits and not be a substitute for the personal effort, motivation and dedication that is needed to manage your weight more effectively.

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Your BMI

Your BMI gives an indication of your health risks.

A BMI between 18 and 25 is regarded as “Normal”, between 25 and 30 is classed as “Overweight” and a BMI between 30 and 40 is in the “Obese” range.

If you have a BMI over 40 you are classed as “Morbidly Obese.”

Not only can obesity affect life expectancy it can be responsible for conditions such as: cardiovascular disease, diabetes Type II, stroke, cancer, joint problems such as osteoarthritis and high blood pressure.


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