We're the UK's leading bowel cancer charity

Body weight

Being overweight or obese can increase your risk of bowel cancer.  

Measuring your BMI (Body Mass Index) is a simple way of finding out if you’re a healthy weight for your height. Your practice nurse, GP or dietitian can help you, or you can check your BMI on the NHS website. 

As well as being physically active, here are a few tips to reduce your calorie intake to help you reach a healthy weight: 

  • Be aware of portion sizes. If you’re still hungry after a meal, choose a health option, such as fruit 
  • Be aware of ‘large’ or ‘value-sized’ offers. They often give you more food than you need, leading to weight gain 
  • Avoid sugary drinks such as cola, lemonade, fruit squash with added sugar and fruit juices  
  • Alcohol is high in calories so limit the amount you drink. 
  • Watch out for extra calories from biscuits, cakes, sweets and crisps. Snack on fruit and vegetables instead. 

The energy in the food we eat is measured in kilocalories, often shortened to calories. The recommended daily calorie intake for moderately active people is around 2,000 calories a day for women and 2,500 calories for men. 

If you are very overweight and have other health problems, speak to your GP before beginning a weight management and exercise programme.

Find out more at nhs.uk/live-well.

Download our Simple steps for good bowel health booklet

Updated August 2024

Back to 'Reducing your risk'

Back to 'About bowel cancer'

PIF TICK logo with the words Trusted Information Creator and Patient Information Forum. There is a blue rectangular border with a big green tick.

We're accredited as a Trusted Information Creator by the Patient Information Forum. This means the way we write our resources has been independently assessed as health information you can trust.

Thanks supporter

Thanks for signing up for this great campaign. To complete the setup of your JustGiving page you need to first create an account for myemail@domain.tld, please enter a new password to use below. Alternatively if you already have an account and would like to use it just click here.

Thanks supporter

Thanks for signing up for this great campaign. To complete the setup of your JustGiving page you need to login to your myemail@domain.tld account, please enter the password for that account below. Alternatively if you have a different account you would like to use just click here.

Forgotten password

Hi supporter, do you want to send a password reminder?.

JustGiving Login

Hi supporter, please enter your JustGiving login details below and we'll handle the rest.