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Fasting During Ramadan

Managing diabetes during Ramadan

Fasting for Ramadan

The Qur'an requires Muslims to fast during the month of Ramadan from sunrise to sunset.

However, there are exceptions to this. One of them is that people who are ill or have medical conditions do not have to fast. This includes people with diabetes. To find out more about this, you can speak to your Imam.

Ultimately, it is a personal choice whether or not to fast. However, if you do choose to fast, then you must consult your GP practice before Ramadan, to make sure that you are able to look after yourself properly. Failing to do so is in itself contrary to the Qur'an, which clearly states that you must not act in a way that harms your body.

Information in this section will help you reduce the risks of becoming ill during Ramadan if you decide to fast, as well as highlighting the dangers of fasting for people with diabetes.

If you decide to fast

If, after consulting with your GP, you decide to fast:

  • If you are taking insulin, you will require less insulin before the start of the fast
  • The type of insulin may also need changing from your usual type
  • Pre-mixed insulin is not recommended during fasting
  • Before starting the fast, you should include more slowly absorbed food (low GI), such as rice, pitta bread and dhal, in your meal, along with fruit and vegetables
  • Check your blood glucose levels more often than you normally would
  • When you break the fast, have only small quantities food, and avoid only eating sweet or fatty foods
  • Try to eat just before sunrise, when you commence the next day’s fast
  • At the end of fasting you should drink plenty of sugar-free and decaffeinated fluids to avoid being dehydrated.

Risks from fasting

  • If you have illnesses associated with diabetes, such as poor vision or heart or kidney disease, the risks of aggravating these is very high and you should seriously consider not fasting
  • For people with diabetes taking certain tablets and/or insulin, fasting carries the risk of hypoglycaemia. If you feel that you are having a hypo, you must break your fast and take some sugary fluids followed by starchy food, in accordance with scripture, as otherwise you will harm your body and may need medical attention
  • You may develop high blood glucose levels during a fast if you do not take prescribed medication or if you are less physically active than normal, which could lead to diabetic ketoacidosis (DKA), a serious condition requiring hospital treatment.

Managing diabetes during Ramadan presentation

A recent study published in the British Medical Journal* found that the change in eating patterns during Ramadan increased the risk of severe hyperglycaemia significantly.

We have developed this screencast which gives advice on fasting safely during Ramadan, and refers to passages from the holy text of the Qur’an which support a healthy lifestyle.


Further advice

For further advice, you can call the Diabetes UK Careline. If you wish to speak in another language, this can easily be arranged.

For young people

Further information about fasting at Ramadan can be found on our pages for children, teenagers and young adults.

Improving Communication

Following the results of your comments on the patient survey we will be sending you newsletters every 2 weeks. 

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