Weight & blood sugar

Obesity & weight management

Simple steps to understand weight and improve health, with support that lasts.

AN ILLUSTRATED MEDICATION GUIDE

Mounjaro & weight-loss injections

Your complete guide to dosing, nutrition, side effects and follow-up.

Open the guide
A balanced meal, measuring tape and bathroom scale illustrating weight management
Weight management: nutrition, habits and follow-up
THE BIG PICTURE

Weight is part of the picture

Good care considers causes, measurements, and how weight affects your health.

BMIAdults 20+, outside pregnancy
Tap a range to see what it means.

BMI does not directly measure body fat. Measurements and health history guide suitable support. Activity can benefit health even without a large weight change.

A SIMPLE STARTING POINT

Calculate your BMI

Enter your height and weight to see your BMI and its adult category.

Ages 20+ · Outside pregnancy

Your measurements stay in this page and are not saved or sent.

Your result appears here

Two measurements, one useful starting point.

  • Underweight< 18.5
  • Healthy weight18.5 – < 25
  • Overweight25 – < 30
  • Obesity≥ 30

BMI is a screening measure, not a diagnosis. It does not directly measure body fat and can be affected by muscle mass. This adult tool is not for pregnancy or people under 20. About the categories

ONE TOPIC, CLEAR NEXT STEPS

Where would you like to start?

A QUICK CHECK

Does weight alone tell the whole story of your health?

Choose an answer to see the explanation.

QUESTIONS YOU MAY HAVE

Let's make it clearer.

Does regaining some weight mean treatment has failed?

Weight can return as appetite and energy needs change, or after some treatments stop. Review changes in your habits and treatment with your clinician to support ongoing care.

Is there one diet that suits everyone?

No. Needs, preferences, and health circumstances differ. A balanced eating pattern you can maintain, with support to apply and adjust it, is a useful starting point.

Keep exploring

Diabetes & prediabetesMake sense of your numbers and habitsAll health topicsReturn to your health library
Sources & content information

Source check: 6 September 2026. General patient education for clinician review. Illustrations are conceptual and are not diagnostic images.