SHARES
Healthy weight
- You and your weight
Weight facts
Counting calories
- Weight loss support
NHS weight loss guide
How to lose weight
- Safe weight gain
Underweight adults
Underweight teens
Underweight children

To find out if you're a healthy weight for your height, work out your body mass index (BMI).
You can easily check your BMI by using this BMI calculator. A BMI between 18.5 and 24.9 is considered healthy.
The BMI calculator can also be used to check if your child is a healthy weight.
Weight gain occurs when you regularly eat and drink more calories than you burn through normal bodily functions and physical activity. Read about the hidden causes of weight gain.
To lose weight, you should try to cut down on how much you eat and drink and be more active.
Find out more about calories and your weight.
Next steps
Take action now and start losing weight.
You can:
- start the NHS weight loss plan
- sign up for weight loss email support
- start running with Couch to 5K
- try our 12-week fitness plan
- get fit with Strength and Flex
- try our tips to help you lose weight
- learn how to achieve a healthy, balanced diet
- read about walking for health
Being underweight isn't good for your health either. If you're concerned about yourself or someone else, read our pages on:
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by GetDoc Team
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