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رمضان كريم
Diabetes & Ramadan Guide
Fasting Safely During
Ramadan with Diabetes
A complete, medically informed guide for Muslims with diabetes. Learn how to fast safely, adjust your medication, eat wisely and monitor your blood sugar.
Pre-dawn meal
Suhoor
Fasting hours
Sawm
Breaking the fast
Iftar
Who can fast?
Consult your doctor before Ramadan
May be able to fast
Type 2 diabetes, well-controlled, on diet alone
Type 2 on metformin only — with doctor's guidance
Type 2 on single non-sulfonylurea oral medication
Stable blood sugar, HbA1c below 7.5% with doctor approval
Those with access to CGM or frequent self-monitoring
Should NOT fast
Type 1 diabetes (with very rare exceptions under close supervision)
HbA1c above 9% or poorly controlled diabetes
Recurrent hypoglycaemia or hypoglycaemia unawareness
Advanced kidney disease (CKD stage 3–5)
Pregnant women with diabetes
Recent DKA episode or hospitalisation
Blood sugar monitoring
When to check your blood sugar during Ramadan
Before Suhoor
Pre-dawn check
Check blood sugar before eating Suhoor. If below 90 mg/dL (5.0 mmol/L), consider a larger meal or adjusting your pre-dawn insulin dose.
Check BG before Suhoor2h after Suhoor
Post-Suhoor check
Check 2 hours after Suhoor. Target: below 180 mg/dL (10 mmol/L). If high, you may need to adjust your Suhoor insulin dose next time — consult your doctor.
Target: < 180 mg/dLMidday (if symptoms)
Mid-fast check (if needed)
If you feel dizzy, shaky, very thirsty, or unusually tired — check your blood sugar immediately. Do not wait until Iftar. Breaking the fast is permitted if needed.
Check if any symptoms appearBefore Iftar
Pre-Iftar check
Check blood sugar 30 minutes before breaking the fast. If below 70 mg/dL (3.9), break the fast now with 15g fast-acting carbs. If above 300 mg/dL (16.7), seek medical help.
Check 30 min before Iftar2h after Iftar
Post-Iftar check
Check 2 hours after Iftar. Target: below 180 mg/dL (10 mmol/L). A large Iftar feast can cause significant blood sugar spikes — portion control is essential.
Target: < 180 mg/dLMeal guidance
What to eat at Suhoor and Iftar
Suhoor (Pre-dawn)
Choose slow-release foods to sustain energy through the fast
Best foods to eat
Oats or whole grain bread (slow-release carbs)
Eggs, labneh or cottage cheese (protein)
Lentils, chickpeas or beans (fibre + protein)
Avocado, nuts or olive oil (healthy fats)
Plenty of water (2+ glasses)
Avoid
White bread, pastries, sugary cereals
Salty foods (cause dehydration)
Sweetened tea or juice
Iftar (Breaking the fast)
Break gently — don't eat a large meal all at once
Best approach
Break with 1–3 dates + water (traditional Sunnah)
Vegetable soup or salad first (slow down eating)
Grilled protein (chicken, fish, eggs) as main
Brown rice, wholewheat bread or legumes
Plenty of vegetables and salad
Avoid
Large portions of white rice, bread or pasta
Fried foods: samosas, briouats, fried chicken
Sweets: chebakia, baklava, Ramadan juices
Eating too fast or too much at once
Medication adjustments
How to adjust medication during Ramadan
These are general guidelines only. Always consult your doctor or pharmacist before Ramadan for a personalised plan.
| Medication | Hypo risk | Adjustment during Ramadan |
|---|---|---|
| Metformin | Low | Take larger dose at Iftar, smaller dose at Suhoor. Generally safe to continue. |
| SGLT2 inhibitors (Jardiance, Forxiga) | Low | Usually taken at Iftar. Monitor for dehydration. Generally safe but may increase ketone risk — discuss with doctor. |
| DPP-4 inhibitors (Januvia, Trajenta) | Low | Taken at Iftar. Generally safe to continue without dose change. |
| GLP-1 agonists (Ozempic, Victoza) | Low | Weekly injections (Ozempic) continue as normal. Daily injections (Victoza) taken at Iftar. Monitor for nausea. |
| Sulfonylureas (Glibenclamide, Gliclazide) | High | High risk of hypoglycaemia. Dose reduction required. Once-daily dose moved to Iftar. Twice-daily: major dose at Iftar, smaller at Suhoor or omitted. Discuss with doctor. |
| Basal insulin (Lantus, Tresiba) | Moderate | Typically reduced by 20–30% and injected at Iftar. Do not stop basal insulin. Adjust only under medical supervision. |
| Rapid-acting insulin (Humalog, NovoRapid) | High | Dose at Suhoor is typically reduced (smaller meal). Full dose at Iftar with the main meal. Doses adjusted to carbohydrate content of each meal (ICR). |
| Premixed insulin (NovoMix, Humalog Mix) | Very high | Regimen requires careful restructuring. Usually split: 2/3 dose at Iftar, 1/3 at Suhoor. Requires close medical supervision. |
Emergency rules
When you MUST break the fast
Break the fast immediately — this is medically and religiously required
< 70
mg/dL
mg/dL
Blood sugar is below 70 mg/dL (3.9 mmol/L) — hypoglycaemia. Eat 15g fast carbs and recheck after 15 minutes.
< 90
mg/dL
mg/dL
Blood sugar is below 90 mg/dL (5.0) AND you are on insulin or sulfonylurea — break the fast as a precaution.
> 300
mg/dL
mg/dL
Blood sugar exceeds 300 mg/dL (16.7 mmol/L) — hyperglycaemic crisis. Drink water, inject correction insulin, seek medical help.
Symptoms
Any symptoms of hypoglycaemia (shakiness, sweating, confusion), DKA (nausea, fruity breath) or severe dehydration.
Illness
Any acute illness, vomiting, diarrhoea or fever that makes it unsafe to continue fasting without food or medication.
A note on religion and health
Islam values the preservation of life above ritual observance. The Quran explicitly permits the sick to break their fast. According to the majority of Islamic scholars, injecting insulin or taking oral medication does not break the fast. However, this is a personal religious decision — consult your scholar and doctor together before Ramadan.
﴿ وَلَا تُلْقُوا بِأَيْدِيكُمْ إِلَى التَّهْلُكَةِ ﴾ — سورة البقرةGeneral tips
Staying safe throughout Ramadan
See your doctor before Ramadan
Book a pre-Ramadan appointment to review your medication, discuss dosing changes and set a personalised blood sugar monitoring plan.
Drink 2–3 litres of water
Drink water steadily between Iftar and Suhoor. Dehydration raises blood sugar and can worsen kidney function. Avoid caffeinated drinks late at night.
Light exercise only
Short walks after Iftar are beneficial. Avoid intense exercise during fasting hours — it increases hypoglycaemia risk and dehydration.
Always carry fast carbs
Keep glucose tablets, dates or juice with you at all times during Ramadan in case of hypoglycaemia. Tell those around you that you have diabetes.
Sleep and rest are important
Disrupted sleep during Ramadan can affect blood sugar regulation. Try to maintain a consistent sleep schedule and rest after Taraweeh prayers.
Use a CGM if available
A continuous glucose monitor is the safest way to fast with diabetes. It gives real-time glucose readings and trend arrows without finger pricks.
FAQ
Frequently asked questions
Many people with well-controlled type 2 diabetes on diet or oral medication can fast safely after consulting their doctor. Most people with type 1 diabetes, those with poorly controlled diabetes (HbA1c above 9%), recurrent hypoglycaemia or advanced kidney disease should not fast without very close medical supervision. A pre-Ramadan appointment with your doctor is essential.
According to the majority of Islamic scholars, injecting insulin subcutaneously and taking oral medications does not break the fast, as these are not food or drink entering through the stomach. However, this is a personal religious decision — consult your own religious authority. Medically, taking necessary medication is always permitted in Islam when health is at risk.
Adjustments must be made with your doctor before Ramadan. General guidance: basal (long-acting) insulin is usually reduced by 20–30% and taken at Iftar. Rapid-acting bolus doses are adjusted to match the carbohydrate content of Suhoor and Iftar meals. Never stop insulin without medical guidance — this can be dangerous.
You must break the fast immediately if blood sugar drops below 70 mg/dL (3.9 mmol/L), rises above 300 mg/dL (16.7 mmol/L), or if you experience symptoms of hypoglycaemia, hyperglycaemia, DKA or severe dehydration. Islam permits and in fact requires you to break the fast to preserve your health.
At Suhoor: prefer slow-release complex carbohydrates (oats, wholegrain bread, legumes), protein (eggs, labneh, cheese) and healthy fats (avocado, nuts, olive oil). These sustain energy longer. At Iftar: break with 1–3 dates and water. Then eat a balanced meal — grilled protein, vegetables, moderate complex carbs. Avoid large portions of fried food, sweets and sugary drinks.
Aim for 2–3 litres of water between Iftar and Suhoor. Distribute it evenly — don't drink it all at once. Dehydration raises blood sugar and can worsen kidney function in people with diabetes. Avoid excessive tea, coffee and sweet drinks, which can increase dehydration.
No. Islam explicitly permits and sometimes requires a person to break the fast to preserve their health. The Quran states: "Allah does not wish hardship upon you." A person who must break their fast due to illness can make up missed days later (Qada) or pay fidya (expiation). Your health is an amanah (trust) from Allah — protecting it is an obligation.
Yes. Most Islamic scholars agree that wearing a CGM sensor does not break the fast as it does not introduce any substance into the body in a nourishing way. CGM is strongly recommended for people with diabetes fasting during Ramadan as it allows real-time monitoring without repeated finger pricks.
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