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Express Chemist Body Mass Index Calculator

Click here to go back to the Alli page.

The Body Mass Index (BMI) scale is a rough indication of how healthy your body weight is. A "normal" BMI is roughly between 18 and 25. Anything below 18 is generally considered underweight, and anything above 25 is usually considered overweight. Most people with a BMI of over 28 are considered to be at risk of illnesses associated with being overweight. The new treatment, Alli, is designed to treat people with a BMI of 28 or over.

To calculate your Body Mass Index, please fill out your weight and height using the form below. You can enter using metric measurements, imperial measurements or any combination of the two.

  1. Please enter your height in either
    • centimetres
    • or feet and inches

  2. Please enter your weight in either
    • kilograms
    • or stone and pounds

  3. Then click to calculate your BMI...


Your BMI is only a rough indication of your body's health. In particular, it cannot differentiate between fat and any other body tissues: it just considers total weight. For example, if you are an athlete or championship bodybuilder, for example, it's possible to be considered "overweight" according your BMI even though your body is carrying excessive muscle rather than excessive fat.

For most normal people, however, BMI is a reasonably good indicator of whether or not you are likely to be overweight.

You can only purchase Alli if your BMI is 28 or more, measured by using the calculator above.

Click here to purchase Alli or to visit the Alli page.

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BMI Calculator - Buy Online from Express Chemist UK Pharmacy

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