Fasting during the holy month of Ramadan is one of the five pillars of Islam and commemorates the time when the Holy Quran was revealed to Muhhammad. The month-long (29-30 day) fast is obligatory for all healthy Muslims who have reached puberty. Followers must refrain from eating and drinking between dawn and sunset, and must abstain from using oral medications, sexual activity and smoking. 

The timing of Ramadan is based on the lunar calendar (355 days per lunar year), which is shorter than the Gregorian (Western) calendar, and Ramadan occurs 10–11 days earlier each every year. This means that the duration of daylight fasting varies according to the time of year in which Ramadan falls. In some parts of the world, daylight can be as long as 20 hours in the peak of summer.

Ramadan is widely observed across the world. Followers must refrain from eating and drinking between dawn and sunset, and must also abstain from using oral medications, sexual activity and smoking. It is believed that spiritual rewards for good deeds are multiplied during Ramadan, and there is an intense desire to participate in fasting, even among those who could seek exemption, such as the elderly, children, the disabled, and pregnant women.

Many Muslims, even those who could seek exemption, have an intense desire to participate in fasting during Ramadan.

Fasting is mandatory for all Muslim adults, with certain groups exempted, such as those with an illness – this may include some individuals with diabetes. Because of the metabolic nature of the disease, people with diabetes are at particular risk of complications from marked changes in food and fluid intake. Potential health hazards include low blood glucose (hypoglycaemia), high blood glucose (hyperglycaemia), dehydration and acute metabolic complications such as diabetic ketoacidosis (DKA).

Estimates suggest that there are 150 million Muslims with diabetes worldwide. Despite being exempt, many people with diabetes participate in fasting during Ramadan. Therefore, Ramadan has a major impact on the management of diabetes in the Muslim population.

Fasting and diabetes

It is important that the decision about whether to fast is made on an individual basis in consultation with a healthcare provider, taking into account the severity of illness and the level of risk involved. A cornerstone of managing diabetes during Ramadan is patient education, which should include information on risks, glucose monitoring, nutrition, exercise and medication.

Studies have shown that pre-Ramadan counselling reduces the episodes of low blood glucose. Pre-Ramadan education provides a platform to remind people with diabetes about the importance of diet and exercise, and that regular glucose monitoring is essential to avoid complications, while reassuring them that this does not invalidate the fast.

Fasting during Ramadan may provide enduring benefits. Indeed, Ramadan can provide an opportunity for a better lifestyle, facilitating weight loss and stopping smoking. For people with diabetes who choose to fast, Ramadan may help to strengthen the therapeutic alliance between patient and physician, and may provide an opportunity to improve diabetes management, with a focus on self-care and the regulation of medication and meal timing.

What to know and do?

Know your risk:
As per the Holy Quran, there are groups of people who might make themselves ill by fasting. Based on medical and religious advice, it is recommended to visit your doctor 6-8 weeks before Ramadan to understand your risk category before deciding to fast. If your doctor advises not to fast, you will get the same Thawab (reward).

Check your blood glucose regularly: Blood glucose measurement and insulin injection do not break the fast and are important. They are your window to know your blood glucose levels and manage your diabetes. Changes in eating habits during Ramadan may affect your blood glucose and therefore it is important check blood glucose levels regularly.

  • People at very high risk (even if not fasting) should check blood glucose levels 3-4 times a day
  • People at moderate or low risk should check blood glucose levels 1-2 times a day

Medication adjustments during fasting: Talk to your doctor about the adjustments required to the dose, timing or type of medication to reduce the risk of low blood sugar.

When to break the fast? All people with diabetes should break the fast if:

    • Blood glucose is lower than 70 mg/dl (3.9 m mol/L). Re-check within one hour if blood glucose is in the range 70-90 mg/dl (50- 3.9 m mol/L)
    • Blood glucose is higher than 300 mg/dl (16.6 m mol/L)*
    • Symptoms of hypoglycemia, hyperglycemia, dehydration or acute illness occur

Exercising during Ramadan: perform regular light-to moderate exercise. Rigorous exercise is not recommended during fasting because of the increased risk of low blood glucose and/or dehydration. Physical exertions involved in Tarawih prayers, such as bowing, kneeling and rising, should be considered part of your daily exercise activities.

Dietary advice for people with diabetes during fasting 

Snacks Divide daily calories between suhoor and iftar, plus 1-2 snacks if necessary  
Carbohydrates Ensure meals are well ballanced 45-50% carbohydrate
  • 20-30% protein
  • <35% fat  
    Vegetables Include plenty of fruit, vegetables and salads  
    Saturated fat Minimise foods that are high in saturated fats (ghee, samosas, pakoras)  
    Oil Use small amounts of oil when cooking (olive, rapessed)  
    Drinks Keep hydrated between sunset and sunrise by drinking water or other non-sweetened beverages Avoid caffeinated, sweetened drinks and sugary desserts  
    Bread Include low glycaemic index, high fibre foods that release energy slowly before and after fasting (granary bread, beans, rice)  

    After Ramadan: when the month of Ramadan ends, avoid over-eating (especially sweets) during Eid-ul-Fitr, as it may lead to high blood glucose. Visit your doctor to obtain guidance on changing the medication back to the previous schedule.

    With the global prevalence of diabetes continuing to increase, and the number of fasting Muslims set to rise, the importance of effective guidelines for the management of diabetes during Ramadan fasting is clear. The IDF-DAR Practical Guidelines provide healthcare professionals with both background and practical information, as well as management recommendations to optimise the care delivered to people with diabetes who plan to fast during Ramadan.

    For additional information, visit

    What is Universal Health Coverage?

    The World Health Organisation defines Universal Health Coverage (UHC) as a situation where all individuals and communities receive the health services they need without suffering financial hardship. UHC is a central piece of the Sustainable Development Goals and, in 2015, all UN Member States committed to achieving it by 2030.

    What is the High Level Meeting on UHC?

    Despite global commitments, half of the world’s population does not yet have full coverage of essential health services at an affordable price. The United Nations is hosting a High Level Meeting (HLM) on UHC on September 23, 2019, to mobilise the highest political support for UHC and adopt a political declaration with milestones for the achievement of UHC by 2030.

    Why is UHC important for people with diabetes?

    Diabetes is a condition that requires lifelong management. Without UHC, people with diabetes can face catastrophic health expenditures and impoverishment as a result of the medical expenses incurred to manage their condition effectively to avoid or delay complications.

    The IDF call to action for the HLM on UHC will soon be available on this webpage.

    What is IDF doing on occasion of the UN HLM on UHC?

    On occasion of the UN HLM on UHC, IDF is urging global leaders to leave no one behind and ensure all people with diabetes have access to essential care and medicines at an affordable price.

    How can you support IDF's campaign on UHC?

    IDF has launched a UHC selfie campaign focused on the cost of essential diabetes care around the world. By participating in it, you can support IDF in ensuring that the voices of people with diabetes are heard on occasion of the HLM on UHC.

    To participate on the selfie campaign:

    1. Respond to our questionnaire on your diabetes care expenditure
    2. Based on your responses, IDF will create and send to your email address a personalised banner for your selfie, along with instructions on how to submit it

    Here are some examples of UHC selfies:

    HLM Selfie Zimbabwe   HLM Selfie Iran

    Eye health picEvery 6 seconds someone in the world is diagnosed with diabetes. In 2017, an estimated 425 million adults worldwide were living with diabetes. If the current trend continues, it is estimated that this number will increase to 629 million by 2045. This is equivalent to 1 in 10 adults.

    As the incidence of diabetes increases worldwide, so does that of its complications, including those affecting the eye. Diabetic retinopathy (DR) can result in impaired vision or blindness. DR affects an estimated one in three people living with diabetes and is a leading cause of avoidable vision loss and blindness in the working-age population.

    By 2030, about 191 million people living with diabetes are estimated to develop diabetic retinopathy. Current estimates show 56.3 million people deteriorating to vision-threatening DR if immediate and appropriate steps are not taken.

    Regular eye screening is essential for all people with diabetes and should therefore be an integral component of routine diabetes care provided by primary healthcare providers. However, geography and limited resources make eye screening difficult in many countries.

    To facilite the provision of eye screening in low-income and/or remote settings, the International Diabetes Federation (IDF) has purchased a first consignment of 100 fundoscopic cameras for distribution to 56 sites identified by IDF Members. The aim is to provide diabetes centres and their personnel with the essential medical equipment to screen people living with diabetes for DR to help manage and prevent this common and costly complication.

    The project also intends to improve data collection and increase the available data on diabetic eye disease worldwide.

    425 million people were living with diabetes in 2017. Most of these cases are type 2 diabetes.  Another 352 million people were estimated to be at high risk of developing type 2 diabetes in 2017. 

    While there are a number of factors that influence the development of type 2 diabetes, it is evident that the most influential are lifestyle behaviours commonly associated with urbanization. These include consumption of unhealthy foods and inactive lifestyles with sedentary behaviour. Randomised controlled trials from different parts of the world, including Finland, USA, China and India, have established the that lifestyle modification with physical activity and/or healthy diet can delay or prevent the onset of type 2 diabetes.

    Modern lifestyles are characterised by physical inactivity and long sedentary periods. Community-based interventions can reach individuals and families through campaigns, education, social marketing and encourage physical activity both inside and outside school and the workplace. IDF recommends physical activity at least between three to five days a week, for a minimum of 30-45 minutes.

    Taking a life course perspective is essential for preventing type 2 diabetes and its complications. Early in life, when eating and physical activity habits are established and when the long-term regulation of energy balance may be programmed, there is an especially critical window to prevent the development of overweight and reduce the risk of type 2 diabetes. Healthy lifestyles can improve health outcomes at later stages of life as well.

    Population based interventions and policies allow healthy choices through policies in trade, agriculture, transport and urban planning to become more accessible and easy. Healthy choices can be promoted in specific settings (school, workplace and home) and contribute to better health for everyone. They include exercising regularly and eating wisely which will help to maintain normal levels of blood glucose, blood pressure and lipids.

    IDF type 2 diabetes prevention resources

    T2D prevention report cover   SC T2D image
    Cost-effective solutions report    Free online short course for health professionals

    Welcome | Committees Programme Exhibitors Registration

    IDF 5K Run PR 7135

    Join us on Wednesday 4 December for the 5K@IDF!

    The 5K@IDF brings together citizens of Busan and IDF 2019 delegates to emphasize the need for increased physical activity to help prevent diabetes and diabetes complications. This disease awareness activity raises awareness about the importance of a healthy lifestyle in preventing type 2 diabetes and managing all types of diabetes.

    Take the first step towards a healthier lifestyle now by registering for the 5K@IDF!

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