Fasting with a Health Condition: What to Know

Fasting is obligatory for every adult Muslim who is able to do it, and the same verses that make it obligatory also excuse those who cannot. The Qur'an (2:184) says, in meaning, that whoever is ill or on a journey should fast an equal number of other days, and that those who can only fast with great difficulty may feed a poor person instead. The next verse (2:185) adds that Allah intends ease, not hardship.

That means a person with a health condition is not choosing between faith and health. The religion itself tells them to look after their health and make up the fast another way. This article explains the common situations in general terms. It is not medical advice; your own plan has to come from your doctor and, for the religious questions, from a scholar or imam you trust.

Who is excused

• Temporary illness that fasting would worsen or prolong: do not fast, make up the days later (qada).
• Long-term illness where a doctor does not expect recovery, or old age that makes fasting very hard: the majority view is that the person feeds one poor person per day (fidyah) instead of fasting.
• Pregnancy and breastfeeding where there is fear of harm to the mother or child: treated like illness; see below.
• Menstruation and post-natal bleeding: the woman does not fast and makes the days up later (Muslim 335).

Details of making up days and paying fidyah are in missed fasts: qada, fidyah and kaffarah.

Diabetes and the IDF-DAR guidelines

The International Diabetes Federation and the Diabetes and Ramadan International Alliance publish practical guidelines for doctors and patients. In general terms they sort people into risk categories:

The exact assessment uses a scoring tool that your doctor or diabetes nurse can apply. What the guidelines stress for everyone who fasts with diabetes:

1. A pre-Ramadan review six to eight weeks before, so January 2027.
2. Education: knowing the signs of low and high blood sugar and when to break the fast.
3. Testing blood sugar does not break the fast; the guidelines ask patients to test often.
4. Break the fast if blood sugar falls below about 70 mg/dL (3.9 mmol/L), rises very high, or you feel the symptoms of a low.

People in the high-risk category who still choose to fast are asked to do so only with close medical supervision. A person who is told not to fast and does not fast is obeying the Qur'an, not neglecting it.

Medication timing

Never change a prescribed medicine on your own. Many medicines can be moved to suhoor and iftar: once-daily tablets often move to one of the two meals, twice-daily tablets to both. Some cannot be moved safely, and some need a lower dose when you fast.

A practical checklist for the appointment:

• Bring a list of every medicine, with doses and usual times.
• Bring your Ramadan timetable from the Ramadan page so your doctor can see your actual suhoor and iftar times (in February–March 2027 the fast is only about 11–13 hours in Europe and North America; see fast length).
• Ask: "Which of these can move to 05:30 and 17:30? Which should not?"
• Ask what symptoms should make you break the fast.

Medicines that are not eaten or drunk, such as creams, patches and most injections, are widely considered not to break the fast, though scholars differ on inhalers and drops. Ask a scholar you trust and do not stop a needed medicine to settle the question.

Pregnancy and breastfeeding

The four Sunni schools agree that a pregnant or breastfeeding woman who fears harm to herself or her child may break the fast. They differ on what she then owes: Hanafis say she makes up the days only; Shafi'is and Hanbalis add a fidyah when the fear was for the child alone; Malikis distinguish between pregnancy (make up only) and breastfeeding (make up plus fidyah). Ja'fari jurists also permit breaking the fast with similar make-up rules. For your own situation, ask a scholar or imam you trust.

Medically, the NHS advises pregnant women to talk to their midwife or GP before fasting, to keep fluids up between iftar and suhoor, and to stop if they feel faint, have headaches, notice reduced movements, or are told to by their care team. Breastfeeding mothers need extra fluid at night; a drop in milk supply is a sign to stop.

Other common conditions

• High blood pressure: usually manageable with tablets moved to suhoor and iftar; check with your GP, keep salt low at suhoor.
• Kidney disease and dialysis: high risk of dehydration; most patients are advised not to fast. Ask your renal team.
• Heart disease: depends on stability and medicines; ask your cardiologist.
• Migraine and epilepsy: fasting can trigger attacks in some people, often through missed sleep and caffeine withdrawal. Plan sleep, taper caffeine in January, and ask your neurologist.
• Mental health: medicines for depression, anxiety and psychosis should not be stopped or shifted without advice. Routine and sleep matter as much as food.
• Older adults: short fasts are often fine, but watch fluids and medicines; read praying when ill or elderly for the prayer side.

If you decide not to fast

You are not alone in the month. Pray tarawih, read Qur'an, give sadaqah, attend iftars, and pay fidyah if that applies to you. The reward of Ramadan is not only in the fast. Review the basics of fasting so you know your options, and revisit the decision each year with your doctor, because conditions and fasting hours change.