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Prevention

There are a number of things you can do to help lower your risk of developing gangrene.

Foot care

If you have diabetes or another long-term condition that can cause atherosclerosis (hardening or thickening of the arteries), it's important you take extra care of your feet.

If you have diabetes, you should have your feet checked at least once a year. However, you may need more frequent check-ups if you have additional risk factors, such as peripheral neuropathy (numbness in the hands and feet), or a history of foot ulcers.

To help prevent a diabetic foot ulcer developing:

  • Check your feet daily for problems such as numbness, discolouration, breaks in the skin, pain or swelling. Report problems to your GP immediately.
  • Don't use chemical preparations for corns and calluses or ingrown toenails. Instead, contact a podiatrist (a healthcare professional who specialises in foot care).
  • Wash your feet daily with warm water. Afterwards, make sure you dry your feet thoroughly, particularly between the toes.
  • Wear shoes that fit properly and don't squeeze or rub. Ill-fitting shoes can cause corns and callouses, ulcers and nail problems.

If you have a history of foot ulcers, wearing specially designed therapeutic or orthopaedic shoes can help prevent further ulcers developing. Your podiatrist may be able to provide you with specially made-to-measure footwear, or they may be able to recommend a stockist.

Find out more about taking care of your feet with type 1 diabetes and type 2 diabetes.

Smoking

Smoking can cause your arteries to become blocked, resulting in a loss of blood supply to your arms or legs. This is known as peripheral arterial disease (PAD).

If you decide to stop smoking, your GP will be able to refer you to an NHS Stop Smoking Service, which will provide dedicated help and advice about the best ways to give up. You can also call the NHS Smoking Helpline on 0300 123 1044.

If you're committed to giving up smoking but don't want to be referred to a stop smoking service, your GP should be able to prescribe medical treatment to help with any withdrawal symptoms you may experience.

For more information about giving up smoking, see quit smoking and stop smoking treatments.

Diet

Eating an unhealthy diet high in fat will make any existing atherosclerosis worse and increase your risk of developing gangrene.

Continuing to eat high-fat foods will cause more fatty plaques to build-up in your arteries. This is because fatty foods contain cholesterol.

There are 2 types of fat – saturated and unsaturated. Avoid foods that contain saturated fats because they increase levels of "bad cholesterol" in your blood.

Foods high in saturated fat include:

  • meat pies
  • sausages and fatty cuts of meat
  • butter
  • ghee (a type of butter often used in Indian cooking)
  • lard
  • cream
  • hard cheese
  • cakes and biscuits
  • food containing coconut or palm oil

Read more about how to eat a balanced diet and how to eat less saturated fat.

Alcohol

Drinking excessive amounts of alcohol will cause your blood pressure to rise, and also raise the level of cholesterol in your blood.

Men and women are advised not to drink more than 14 units a week. 14 units is equivalent to 6 pints of average-strength beer or 10 small glasses of low-strength wine.

Read more about alcohol units and get tips on cutting down.

Exercise

A healthy, well-balanced diet and regular exercise will keep your blood pressure and cholesterol levels at a healthy level, helping prevent your blood vessels becoming damaged.

Unless advised otherwise by your doctor, you should be aiming for at least 150 minutes (2.5 hours) of moderately intense physical exercise a week.

Moderate intensity physical activity is any activity that increases your heart and breathing rate. It may make you sweat but you'll still be able to hold a normal conversation. Examples include:

  • fast walking
  • cycling on level ground or with few hills
  • swimming
  • tennis

You should choose physical activities you enjoy because you're more likely to continue doing them.

It's probably unrealistic to meet these exercise targets immediately if you haven't exercised much in the past. Aim to start gradually and build up the amount of exercise you do over time.

Read more about the benefits of exercise.

Last Reviewed
04 December 2023
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