Fasting in Islam: Meaning, Benefits and Safety
In short
Fasting in Islam is not a diet with a religious label on it. It is a month of training in restraint, with a stated purpose in the Qur'an and a set of exemptions written into it from the beginning. This is the long version: what sawm is, how it became obligatory, the voluntary fasts most people never hear about, how other faiths fast, what the medical research honestly shows — including where the popular claims run well ahead of the evidence — the rules for missed days, the last ten nights, and who should not fast at all. I've also cut one very famous saying that gets quoted in articles like this and turns out not to be a hadith.
What's on this page
- Why I stopped calling it "not eating"
- What sawm actually is
- The verse, and the word at the end of it
- How the fast became obligatory
- The fasts outside Ramadan
- Training the nafs — and a quotation to drop
- "Fasting is for Me": the reward with no number on it
- The verse hidden in the middle of the passage
- Fasting in other religions
- What happens inside the body
- What the Ramadan studies actually found
- Therapeutic fasting: promising, and oversold
- Who should not fast
- The exemptions were built in from the start
- Missed days, fidyah and kaffarah
- The last ten nights
- Getting through Ramadan in Kathmandu
- Common questions
Why I stopped calling it "not eating"
For years, if a non-Muslim colleague asked me what Ramadan was, I'd say something like "we don't eat or drink from dawn to sunset". Accurate, and completely useless. It describes the mechanism and misses the point entirely, in the same way that describing a marathon as "walking, but faster" is technically true.
What changed my answer was a fairly ordinary observation. In the last week of Ramadan one year I noticed I'd stopped snapping at people. Not because I'd decided to be nicer, but because a month of saying no to something small and constant had made saying no to other things easier. The hunger was almost incidental. The habit of refusal was the thing.
That's the honest version. Fasting is not primarily about the stomach. It is about installing a pause between an urge and an action, and then discovering how many parts of your life that pause improves.
I should also say what this article is not. It is not a defence of fasting on health grounds. That approach is common and I think it's a mistake, for reasons I'll set out at length in the medical sections. The Qur'an gave a reason for fasting, and the reason it gave was not cholesterol.
What sawm actually is
The Arabic word sawm means to hold back or abstain. In its Islamic sense it means abstaining from food, drink and marital intimacy from the first light of dawn (Fajr) until sunset (Maghrib), with the intention of worship. That last part matters. A person who skips breakfast because they overslept has not fasted. Intention is what turns going hungry into an act.
Who
Every adult Muslim of sound mind and reasonable health. Children are not obliged, though many start with partial days.
When
The month of Ramadan, the ninth month of the lunar calendar, so it moves roughly eleven days earlier each solar year.
What breaks it
Eating, drinking, smoking, intimacy, and deliberately vomiting. Accidental eating, forgetfully, does not.
What ruins it
Lying, backbiting, obscene speech, losing your temper. The fast stands, but it has been emptied of most of its value.
That last card is the one people underestimate. The Prophet Muhammad ﷺ was blunt about it.
On what the fast is for
مَنْ لَمْ يَدَعْ قَوْلَ الزُّورِ وَالْعَمَلَ بِهِ فَلَيْسَ لِلَّهِ حَاجَةٌ فِي أَنْ يَدَعَ طَعَامَهُ وَشَرَابَهُ
"Whoever does not give up false speech and acting upon it, God has no need of his giving up his food and drink." (Sahih al-Bukhari 1903)
Read that as a design statement. The abstention from food is the training equipment, not the goal. If the equipment produces no change in how you speak to people, the tradition itself says God isn't interested in your hunger.
There's a companion narration in the same spirit: if someone insults you or picks a fight while you're fasting, say "I am fasting" — twice if necessary — and leave it there. Not as a boast. As a way of removing yourself from an argument you would otherwise have joined.
The verse, and the word at the end of it
The instruction to fast is given in Surah al-Baqarah, and unusually, it comes with its purpose attached.
يَا أَيُّهَا الَّذِينَ آمَنُوا كُتِبَ عَلَيْكُمُ الصِّيَامُ كَمَا كُتِبَ عَلَى الَّذِينَ مِن قَبْلِكُمْ لَعَلَّكُمْ تَتَّقُونَ
"O you who believe, fasting is prescribed for you as it was prescribed for those before you, so that you may become mindful of God."Qur'an 2:183
Two things in one sentence. First, "as it was prescribed for those before you" — the Qur'an does not present fasting as a Muslim invention. It presents it as an old practice being renewed, which is worth remembering before the comparative section.
Second, that closing phrase, la'allakum tattaqun. The word is taqwa, usually translated as God-consciousness or mindfulness of God. It's the awareness that you are seen. And fasting is an unusually good tool for producing it, because no one can verify your fast. You could drink a glass of water alone in your kitchen and nobody on earth would know. The only thing holding the fast together is the belief that you are being watched by someone who never isn't watching.
The private act
Prayer can be seen. Charity can be seen. Fasting cannot. It is the one obligation that exists entirely between a person and God, which is why the tradition treats it as the purest test of sincerity.
Notice also the tentative construction. La'alla means "so that perhaps" or "in the hope that". The verse does not say fasting will make you mindful of God. It says fasting is prescribed so that you might become so. The outcome is not automatic, which is exactly what the Bukhari hadith above spells out.
How the fast became obligatory
The obligation did not arrive all at once, and the sequence tells you something about how the Qur'an legislates.
| Stage | What happened | Source |
|---|---|---|
| Before Ramadan was revealed | The Prophet fasted the day of Ashura in Makkah, and continued after the migration on finding the Jewish community of Madinah fasting it too. | Sahih al-Bukhari 2002, 1893 |
| Second year after the migration | Ramadan is made obligatory. Ashura becomes voluntary — "whoever wishes may fast it, and whoever wishes may leave it." | Sahih al-Bukhari 1592 |
| The initial concession | At first, those able to fast could instead feed a poor person — a genuine choice, later restricted. | Qur'an 2:184; Sahih al-Bukhari 4507 |
| The concession narrowed | 2:185 established fasting as the obligation for those able, leaving the feeding option to those who cannot fast at all. | Qur'an 2:185 |
| The nights relaxed | Early on, eating and intimacy were prohibited after the night prayer or after sleeping. People found this very hard, and 2:187 lifted it — the fast now runs dawn to sunset only. | Qur'an 2:187; Sahih al-Bukhari 1915 |
The last row is the one I find most striking. The original restriction was heavier, people struggled with it, some broke it, and the ruling was eased with an explicit acknowledgement in the verse: "God knows that you used to betray yourselves, so He accepted your repentance and pardoned you." The obligation was calibrated downwards to what people could actually sustain. That is not a small detail about the character of the law.
The fasts outside Ramadan
Ramadan is the obligation. It is not the whole practice, and the voluntary fasts are the part most people — including plenty of Muslims — never really learn about.
| Fast | When | Reported merit |
|---|---|---|
| Mondays and Thursdays | Weekly | The Prophet fasted these regularly; deeds are presented on those days. |
| Ayyam al-Bid | 13th, 14th, 15th of each lunar month | Three days a month, which the tradition equates with fasting continuously, since each good deed counts tenfold. |
| Day of Arafah | 9th Dhu'l-Hijjah, for those not on Hajj | "I hope God will expiate thereby the year before it and the year after it." (Sahih Muslim 1162) |
| Ashura | 10th Muharram, ideally with the 9th | "It expiates the sins of the previous year." (Sahih Muslim 1162) |
| Six days of Shawwal | Any six days after Eid al-Fitr | Combined with Ramadan, likened to fasting the whole year. (Sahih Muslim 1164) |
| The fast of Dawud | Alternate days | Described as the most beloved fast to God — and also the ceiling. The Prophet told Abdullah ibn Amr not to exceed it. |
"Fasting Arafah or Ashura wipes out everything you've done."
Only minor sins. Al-Nawawi and Ibn Taymiyyah both make the point explicitly: major sins require actual repentance, and the general expiation reports carry the condition "so long as major sins are avoided". Ibn Taymiyyah put it sharply — prayer is better than voluntary fasting and Ramadan is greater than Arafah, and neither expiates while major sins stand, so how would one voluntary day?
The Dawud fast row deserves a note. Abdullah ibn Amr wanted to fast every day and pray all night. The Prophet negotiated him down in stages and finally set the limit at alternate days, telling him that his body has a right over him, his family has a right over him, and his guest has a right over him. That is the tradition capping enthusiasm, in writing, in the strongest collections.
Training the nafs — and a quotation to drop
The Qur'an describes a part of the self it calls al-nafs al-ammarah bi'l-su' — the self that commands to evil (12:53). It's not a demon and it's not the body. It's the ordinary appetite-driven part of a person that wants what it wants now and argues persuasively for it.
Fasting works on that part directly and repeatedly. Thirty days, roughly fifteen hours each in this part of the world, of an appetite making its case and being told no on schedule. What the tradition claims — and what I think anyone who has fasted properly recognises — is that the capacity built there transfers. The person who can decline water at two in the afternoon has practised the exact mental move required to decline a great many other things.
There's also a quieter effect that nobody plans for. Water tastes extraordinary at sunset. A single date is an event. The tradition calls these things ni'mah, blessings, and the reason fasting reveals them is that abundance hides them. You cannot notice what you have never been without.
Commonly quoted in articles like this: the Prophet said al-faqru fakhri — "poverty is my pride."
This is not a hadith. Ibn Taymiyyah was asked about it and answered that it is a fabricated lie, not narrated by anyone with knowledge of hadith, and that its meaning is false — the Prophet said "I am the master of the children of Adam, and no boast." Al-Saghani ruled it forged outright, and Ibn Hajar al-Asqalani records both judgements in al-Talkhis al-Habir. It circulates widely in devotional writing, but it should not be quoted as the Prophet's words, and it has nothing to do with fasting anyway.
I've left it out for that reason, and I'd gently suggest checking any article that includes it. The authentic material on detachment is abundant and doesn't need help from a forgery.
While we're here, two more claims worth handling carefully. The narration often rendered "the stomach is the house of disease" is not established as the Prophet's words — it circulates as a saying of physicians. And the hadith about the son of Adam filling no worse vessel than his stomach, with a third for food, a third for drink and a third for air, is in Tirmidhi and Ibn Majah and is generally accepted; it is a statement about moderation, though, not a fasting protocol.
"Fasting is for Me": the reward with no number on it
There's a hadith qudsi about fasting that says something the tradition says about no other act.
Hadith qudsi on the reward
كُلُّ عَمَلِ ابْنِ آدَمَ لَهُ إِلَّا الصَّوْمَ فَإِنَّهُ لِي وَأَنَا أَجْزِي بِهِ
"Every deed of the son of Adam is for him, except fasting — it is for Me, and I shall reward it." (Sahih al-Bukhari 1904, Sahih Muslim 1151)
Every other good deed has a stated multiplier in the reports — tenfold, seven hundredfold. Fasting is deliberately left without one. The commentators offer several readings: that fasting is pure abstention with no outward form to be seen, that no one else was ever worshipped by fasting in the way idols received sacrifices and prostration, and simply that the reward is too large to be quantified.
The same narration continues with a line that stops the whole thing from becoming grim:
The two joys
لِلصَّائِمِ فَرْحَتَانِ يَفْرَحُهُمَا إِذَا أَفْطَرَ فَرِحَ وَإِذَا لَقِيَ رَبَّهُ فَرِحَ بِصَوْمِهِ
"The fasting person has two joys: a joy when he breaks his fast, and a joy when he meets his Lord." (Sahih Muslim 1151)
I like that the first joy is entirely physical. It is a glass of water and a plate of food, and the hadith counts it as part of the worship rather than as a distraction from it. There is no asceticism here that despises the body. The pleasure of iftar is written into the description of the act.
The verse hidden in the middle of the passage
Something easy to miss: the fasting verses run from 2:183 to 2:187, and sitting in the middle of them, apparently off-topic, is one of the most quoted verses in the Qur'an.
وَإِذَا سَأَلَكَ عِبَادِي عَنِّي فَإِنِّي قَرِيبٌ أُجِيبُ دَعْوَةَ الدَّاعِ إِذَا دَعَانِ
"And when My servants ask you about Me — I am near. I answer the call of the caller when he calls upon Me."Qur'an 2:186
Its placement is the point. It is not a digression; it is what the fast is for. The commentators read it as an assurance dropped in exactly where a hungry, tired person might start wondering whether any of this registers. Note the grammar too: everywhere else in the passage God speaks about Himself in the third person or the royal plural. Here it switches to the direct first person singular, four times in one line. I am near. I answer.
There's a related and much-loved report that the supplication of the fasting person is not turned back — it appears in Tirmidhi and Ibn Majah, with some discussion among scholars about its chain, so I'd cite it as a widely accepted narration rather than as a copper-bottomed one. The Qur'anic verse above needs no such hedging.
Fasting in other religions
Since the Qur'an itself says fasting was prescribed to earlier communities, it would be strange if it appeared nowhere else. It appears nearly everywhere.
| Tradition | Principal fast | What it involves |
|---|---|---|
| Islam | Ramadan | Dawn to sunset, one lunar month; no food, drink or intimacy; the sick, travelling, pregnant, nursing and menstruating are exempt. |
| Judaism | Yom Kippur | About 25 hours; no food or drink, plus abstaining from washing, ointments, leather shoes and intimacy. The ill, pregnant and nursing are exempted, and preserving life overrides the fast. |
| Christianity | Lent | Forty days recalling Jesus's fast in the wilderness. Practice varies widely — Orthodox and Eastern churches keep strict dietary rules; many Western Christians give up a single item. |
| Buddhism | Monastic rule | Monks and nuns in the Theravada tradition eat nothing solid after midday, so the daily fast runs from noon until the following dawn. |
| Hinduism | Vrat | Fasts tied to lunar days such as Ekadashi, to particular weekdays, and to festivals including Navaratri, Shivaratri and, in Nepal, Teej. |
| Zoroastrianism | Largely rejected | Most authorities discourage abstaining from food, arguing that a strong body serves the good. Many keep four meat-free days each month instead. |
Three patterns stand out when you lay them side by side. Every tradition that mandates a serious fast also builds in exemptions for the ill and the vulnerable — nobody treats endurance as the point. Almost all of them pair the fast with charity rather than leaving it as private self-denial. And the Zoroastrian objection is genuinely interesting: it argues that fasting from wrongdoing with the eyes, hands and tongue matters more than fasting from bread. Islam doesn't disagree with the second half of that at all. The hadith in section two says almost exactly the same thing. It simply doesn't accept that this makes the physical fast redundant.
Fasting has also been used outside religion altogether. Gandhi's fasts, some lasting weeks, were both penance and political pressure — a demonstration that voluntary hunger carries a moral weight that argument alone does not. Hunger strikes by prisoners work on the same principle, and so, in a much gentler register, does the modern practice of giving something up for a cause.
What happens inside the body
Now the medical half, and I want to be careful here, because this is the section where religious writing tends to lose its discipline. There is real research on fasting. There is also a great deal of confident nonsense, and quite a lot of it is written by people trying to be helpful about Ramadan.
The basic physiology is not controversial. After you eat, your body runs on glucose. Once the last meal is processed and liver glycogen starts to run low — typically twelve hours or so in — it shifts towards breaking down stored fat, producing ketone bodies that the brain and muscles can use. Researchers call this the metabolic switch.
Hours 0–4
Digestion and absorption. Insulin high, glucose the main fuel.
Hours 4–12
Insulin falls, liver glycogen is drawn down to hold blood sugar steady.
Hours 12–16
Fat oxidation increases. Ketones begin to rise. Most Ramadan fasts sit around here.
Beyond 24 hours
Ketosis becomes established. This is where most of the dramatic autophagy findings come from — and it is longer than a Ramadan day.
"Fasting slows your metabolism down."
Not over the short term. Measured resting energy expenditure actually rises modestly in early fasting, driven by increased noradrenaline. The slowdown people worry about belongs to prolonged, sustained calorie restriction, not to a daily dawn-to-sunset fast followed by a full evening meal.
"Ramadan triggers autophagy, so your cells clean themselves out every day."
Handle with care. Autophagy is real and fasting does regulate it, but nearly all the strong evidence comes from animal studies and from human protocols involving multi-day fasts or fasting-mimicking diets — five to seven days, not fifteen hours. Human trials measuring actual autophagic flux are few, recent, small, and inconsistent even between different diet formulations. Saying "Ramadan gives you autophagy" states as settled something researchers are still trying to measure.
I labour this because it's the same error I've written about elsewhere on this site: taking a headline from a laboratory and welding it onto a religious practice for rhetorical benefit. The fast doesn't need it. And if the science shifts in five years, anyone who anchored their faith to it is left holding the wreckage.
A useful test. Ask whether you would still consider the practice worth doing if the health finding were reversed tomorrow. If the answer is yes, the health finding was never the reason — so stop presenting it as one.
What the Ramadan studies actually found
Ramadan is, from a researcher's point of view, an unusually good natural experiment: a large population changes its eating schedule dramatically for a fixed month, then changes back. So there is a real literature here, and it is more modest and more interesting than the headlines.
| Claim | Standing | Detail |
|---|---|---|
| Shift towards fat burning | Well supported | Fat oxidation rises and carbohydrate oxidation falls during the fasting hours, even when total daily calories are unchanged. |
| Improved lipid profile | Supported, modest | Reviews generally find lower total cholesterol and triglycerides and somewhat higher HDL, with effects that fade within weeks of Ramadan ending. |
| Weight loss | Small and temporary | Typically one to two kilograms, usually regained. Depends almost entirely on what happens at iftar. |
| Insulin sensitivity | Mixed | Some improvement reported, inconsistent across studies, confounded by sleep loss and changed activity. |
| Reproductive and thyroid hormones | No major disruption | Short-term fasting does not appear to cause lasting changes to men's reproductive or thyroid hormones, or to cycle length in healthy women. |
| No harm to healthy adults | Well supported | This is the sturdiest finding in the whole literature and the only one I'd state without hedging. |
| Longevity | Not established in humans | Calorie restriction extends lifespan in several animal models. That has not been demonstrated for human intermittent fasting, and Ramadan does not reduce total calories anyway. |
Notice the pattern. Ramadan doesn't usually reduce how much people eat — it reduces how many times and reorganises when. Several studies found total daily intake essentially unchanged. Which means most claims imported from calorie-restriction research don't straightforwardly apply, and it explains the very common experience of finishing Ramadan a kilogram heavier than you started.
If you want the health benefit as well as the spiritual one, the variable is iftar, not the fast. A fried, sugary breaking of the fast followed by four hours of eating undoes the metabolic effect of the entire day. This is not a religious point; it is arithmetic.
Two confounders worth naming, because they make a lot of Ramadan research harder to read than it looks. Sleep changes dramatically — late nights, early suhur, broken rest — and sleep loss affects glucose handling, appetite hormones and mood on its own. And physical activity usually drops. So when a study reports a change during Ramadan, the fast is one of at least three things that changed.
Therapeutic fasting: promising, and oversold
Separate from Ramadan, medically supervised fasting is being studied as a treatment. The evidence here is genuinely encouraging in places and thin in others, and it's worth separating the two.
Rheumatoid arthritis
The best-established case. Supervised fasting followed by a vegetarian diet has shown reduced pain, fewer swollen joints and lower inflammatory markers, with effects lasting when the diet is maintained. The fast alone is not enough — the diet afterwards is doing much of the work.
Type 2 diabetes
Structured intermittent fasting can improve glycaemic control and, in some trials, drive remission. This should be done with a doctor, because medication doses need adjusting.
Cardiovascular markers
Consistent modest improvements in blood pressure and lipids. Whether that translates into fewer heart attacks is not yet answered.
Cancer and neurodegeneration
Active research, mostly preclinical or early-phase. Real scientists are working on it; anyone telling you fasting treats cancer is well ahead of them.
On the immune side, one finding that gets quoted loosely deserves stating precisely: a short fast was found to enhance the antibody response to an orally administered influenza vaccine, which acts on the gut lining, but not to an injected one. That is a narrow, specific result about mucosal immunity. It is not evidence that fasting boosts your immune system generally, and it certainly isn't a reason to skip a jab.
On addiction and self-control, I'd say the honest position is that the mechanism is behavioural rather than biochemical. Fasting doesn't chemically cure a nicotine habit. It gives you thirty days of daily rehearsal in overriding a craving on a fixed schedule, and many people find that this is exactly the scaffolding they needed. Plenty of smokers in this country quit in Ramadan. Not because their receptors changed.
"Fasting detoxifies the body."
The word "detox" has no clinical meaning here. Your liver and kidneys clear metabolic waste continuously, fed or fasted, and no fasting protocol has been shown to remove a named toxin that they were failing to remove. There are real metabolic effects, discussed above. "Detox" is not one of them, and it is the single most common piece of pseudo-science attached to Ramadan.
Who should not fast
This section matters more than the rest of the article, so I've kept it plain.
"A real Muslim fasts no matter what. Illness is an excuse."
This is the opposite of the ruling. Fasting when it will damage your health is not piety and is not rewarded. The Qur'an gives the exemption in the same passage that gives the command, and it ends the verse: "God intends ease for you and does not intend hardship for you" (2:185).
| Group | Guidance | Why |
|---|---|---|
| Type 1 diabetes | Advised not to fast | The International Diabetes Federation places type 1 diabetes in the highest risk category. Risks include severe hypoglycaemia, dehydration and diabetic ketoacidosis — a life-threatening build-up of acid that occurs when ketone production is not held in check by insulin. |
| Type 2 diabetes on insulin or sulfonylureas | Assess with a doctor first | Risk depends on control, history and medication. The IDF risk score is designed for exactly this conversation and should be repeated each year. |
| Pregnancy | Exempt; medical advice needed if fasting anyway | Classified as high risk where diabetes is present. Exemption exists precisely so that no one has to weigh this up alone. |
| Breastfeeding | Exempt | Macronutrients in breast milk and infant growth appear unaffected, but studies have found significant falls in zinc, magnesium and potassium, and mothers' own intake drops below requirements. Researchers involved have recommended that nursing women be excused. |
| Kidney disease, on dialysis | Advised not to fast | Fluid restriction plus a long fast is a dangerous combination. |
| Eating disorders, current or past | Speak to a clinician first | A month of structured food restriction with social approval attached is a well-recognised relapse risk. This is rarely discussed and should be. |
| Acute illness, or any condition requiring timed medication | Exempt while it lasts | Missed days are made up later, or fed forward as fidyah where the condition is permanent. |
| Gilbert's syndrome | Usually fine, but expect a result | Fasting raises bilirubin, so a harmless yellowing of the eyes can appear. Worth knowing so that it isn't mistaken for liver disease. |
| Older adults with frailty | Individual assessment | Dehydration risk and drug interactions rise with age. Fidyah exists for exactly this situation. |
Two practical additions. Anyone on regular medication should speak to a doctor several weeks before Ramadan, not on the first morning — many drugs can simply be re-timed to suhur and iftar, but that needs planning. And if you feel faint, confused, or your heart is racing, break the fast. That is the ruling, not a concession to weakness.
On the things people ask about: according to the majority position, injections that are not nutritional, blood tests, inhalers used for asthma in most contemporary rulings, eye and ear drops, and dialysis in some views are all subjects of live scholarly discussion. Ask a scholar you trust about your own case rather than reading a forum. But never stop necessary treatment first and ask afterwards.
The exemptions were built in from the start
It's worth dwelling on this because it distinguishes Islamic fasting from asceticism, and because a certain kind of enthusiasm gets it badly wrong.
فَمَن كَانَ مِنكُم مَّرِيضًا أَوْ عَلَىٰ سَفَرٍ فَعِدَّةٌ مِّنْ أَيَّامٍ أُخَرَ يُرِيدُ اللَّهُ بِكُمُ الْيُسْرَ وَلَا يُرِيدُ بِكُمُ الْعُسْرَ
"Whoever among you is ill or on a journey, then a number of other days. God intends ease for you and does not intend hardship for you."Qur'an 2:185
The exemption is not a footnote added by later jurists. It is in the founding text, in the same passage as the obligation, with a stated reason. Fasting is instrumental. When it stops serving the person it was given to, it stops applying.
The Prophet reinforced the same principle in the other direction. He forbade the continuous fast, wisal, where people tried to run one day's fast into the next without breaking it. When companions pointed out that he did it himself, he replied that he was not like them in that respect — and still told them not to. He also instructed that suhur, the pre-dawn meal, be taken, describing it as a blessing, and encouraged breaking the fast promptly at sunset rather than delaying to appear more devoted. On a journey during a military expedition he saw a man shaded by a crowd because he was struggling with the fast, and said that it is not righteousness to fast while travelling.
The shape of it
Eat before dawn. Break it as soon as the sun sets. Don't run days together. Don't fast if you're ill. Every one of those instructions pushes against the instinct to make the practice harder than it was designed to be.
Missed days, fidyah and kaffarah
Three different mechanisms that get muddled constantly, so here they are separated.
| Situation | What is due | Notes |
|---|---|---|
| Temporary excuse — illness, travel, menstruation, post-natal bleeding | Qada — make up the same number of days later | Any time before the next Ramadan. No expiation, no penalty. Menstruating women do not fast and make the days up; this is the ruling, not a deficiency. |
| Permanent inability — chronic illness, frailty of old age | Fidyah — feed a poor person for each missed day | Based on 2:184, "and upon those who are able to do it with hardship, a ransom: feeding a poor person." |
| Pregnancy and breastfeeding | Qada, or fidyah, or both | The schools differ. Broadly: qada in the Hanafi position, fidyah as well in others depending on whether the concern is for the mother or the child. Follow a scholar you trust. |
| Deliberately breaking the fast by intimacy | Kaffarah — freeing a slave, or fasting two consecutive months, or feeding sixty poor people | From the hadith of the man who came to the Prophet in distress (Sahih al-Bukhari 1936). Note how the story ends. |
| Deliberately eating or drinking without excuse | Disputed | Some hold kaffarah applies by analogy, others only qada and repentance. |
وَعَلَى الَّذِينَ يُطِيقُونَهُ فِدْيَةٌ طَعَامُ مِسْكِينٍ
"And upon those who are able to do it with hardship, a ransom: feeding a poor person."Qur'an 2:184
That kaffarah story is worth telling properly, because it is usually cited only for the penalty. A man came to the Prophet saying he was ruined, having had relations with his wife during a day of Ramadan. He was asked whether he could free a slave: no. Fast two months: no. Feed sixty poor people: no. While they sat there, a large basket of dates arrived, and the Prophet told him to take it and give it away in charity. The man replied that there was no household in Madinah poorer than his own. The Prophet laughed until his back teeth showed, and told him to feed it to his own family.
How the penalty section ends
The most serious expiation in the fasting chapter concludes with the offender being handed food for his children and the Prophet laughing. Any presentation of Ramadan as a month of grim accounting has to get past that.
The last ten nights
The final third of the month works differently, and it's where the practice concentrates. A'ishah رضي الله عنها described the Prophet as tightening his waist-wrapper, staying awake at night and waking his family when the last ten nights entered (Sahih al-Bukhari 2024). Many people keep i'tikaf, a retreat in the mosque, for those ten days.
The reason is a single night described in its own chapter of the Qur'an.
إِنَّا أَنزَلْنَاهُ فِي لَيْلَةِ الْقَدْرِ وَمَا أَدْرَاكَ مَا لَيْلَةُ الْقَدْرِ لَيْلَةُ الْقَدْرِ خَيْرٌ مِّنْ أَلْفِ شَهْرٍ
"We sent it down on the Night of Decree. And what will make you know what the Night of Decree is? The Night of Decree is better than a thousand months."Qur'an 97:1–3
A thousand months is over eighty-three years — a whole lifetime of worship, in one night. Its exact date is deliberately concealed; the instruction is to seek it in the odd nights of the last ten, and the widespread fixation on the twenty-seventh is a probability rather than a certainty. The concealment is the mechanism. If you knew the date you would prepare for one night. Not knowing it, you keep ten.
A'ishah asked what to say if she found it. The answer is short enough to memorise in a minute.
The dua for Laylat al-Qadr
اللَّهُمَّ إِنَّكَ عَفُوٌّ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
"O God, You are Pardoning and love to pardon, so pardon me." (Jami' at-Tirmidhi 3513, graded sound)
And the month closes with a payment, not a celebration. Zakat al-Fitr is due before the Eid prayer, and the reason given for it in the narration of Ibn Abbas رضي الله عنهما is precise: the Prophet enjoined it "as a purification for the fasting person from idle talk and obscene speech, and as food for the poor. Whoever pays it before the prayer, it is accepted zakat; whoever pays it after, it is ordinary charity" (Sunan Abi Dawud 1609, Ibn Majah 1827; graded hasan by al-Albani).
That hadith closes the loop opened in section two. The fast is damaged by the things you said during it. The remedy prescribed is not more fasting — it is feeding someone. The month begins with restraint and ends with a transfer of food to a person who did not have any.
Getting through Ramadan in Kathmandu
A few notes specific to where I'm writing from, because general advice written for Gulf countries doesn't always transfer.
Fasting length
Nepal sits around 27 to 28 degrees north, so fasts run roughly thirteen hours in winter and up to about fifteen and a half in the longest summer months. Manageable compared with northern Europe, but a summer Ramadan here is a serious undertaking.
Altitude and dehydration
Kathmandu is around 1,400 metres, and the air is dry through the spring. Dehydration builds faster than people expect. The water you drink between iftar and suhur is not optional.
Ramadan is not a holiday here
Unlike Muslim-majority countries, working hours don't shift. Plan sleep deliberately — most of the exhaustion people blame on hunger is actually sleep debt from a late iftar and an early suhur.
Air quality
The pre-monsoon months bring poor air to the valley. If you have asthma, a fast plus a bad air day is a combination to take seriously, and breaking the fast is the right call.
Manual work
A great many Nepali Muslims work in construction, transport and agriculture, and a fifteen-hour fast doing physical labour in May is a different act from fasting at a desk. Scholars have long allowed the genuinely exhausted labourer to break the fast and make it up, and nobody should feel judged for that.
Migrant workers abroad
Hundreds of thousands of Nepalis work in the Gulf, where fasting hours are similar but summer temperatures are not. Heat illness is the risk there, not hunger. Employers' rules vary; know yours before Ramadan starts.
On the food itself: the traditional iftar of dates and water is not sentimentality, it's sensible. Dates give quick glucose and some potassium, water rehydrates, and a short pause for Maghrib before the main meal stops you eating a day's worth of food in eight minutes. It's the closest thing the tradition has to portion control, and it works.
One more thing, and it's a Nepal-specific point about manners. Ramadan here happens inside a Hindu-majority society that has its own long and serious fasting culture — Ekadashi, Teej, Shivaratri. In my experience that's a bridge rather than a barrier. Explaining a fast to someone who keeps one takes about four seconds. It is the one part of the practice that needs no translation at all.
Where I've landed: the strongest thing you can say about fasting medically is that it does healthy adults no harm and produces modest, mostly temporary improvements — and the strongest thing you can say about it religiously has nothing to do with medicine at all. The Qur'an gave a purpose, and it was taqwa, not cholesterol. My advice, for whatever it's worth, is to stop defending the fast with laboratory findings that may not survive the decade, watch what you eat at iftar if you want the physical benefit, learn the voluntary fasts because they're where the habit actually lives once Ramadan ends, and take the exemptions seriously when they apply to you. Refusing an exemption God wrote into the verse is not extra devotion. It's a misreading.
Common questions
What does sawm mean in Islam?
Sawm is the Arabic word for fasting, literally meaning to hold back or abstain. In Islamic law it means abstaining from food, drink and marital intimacy from dawn until sunset, with the intention of worship. The intention is essential — going without food for any other reason is not sawm. It is the fourth pillar of Islam and obligatory during the month of Ramadan.
Why do Muslims fast in Ramadan?
Because the Qur'an commands it in 2:183, and that verse also states the purpose: "so that you may become mindful of God." The aim is taqwa, an awareness of being seen by God. Fasting suits that aim particularly well because nobody can verify it — it is the one act of worship that rests entirely on sincerity rather than appearance.
When did fasting Ramadan become obligatory?
In the second year after the migration to Madinah. Before that the Prophet fasted the day of Ashura, and when Ramadan was prescribed, Ashura became voluntary. The obligation also arrived in stages: an initial option to feed a poor person instead was narrowed by 2:185, and an early restriction on eating and intimacy during the nights was lifted by 2:187 after people found it too hard.
Does fasting slow your metabolism?
Not over short periods. Measured resting energy expenditure rises slightly during early fasting, driven by increased noradrenaline, rather than falling. The metabolic slowdown people worry about is associated with sustained calorie restriction over long periods, not with a daily fast followed by normal evening eating. In practice most people's total daily intake during Ramadan barely changes.
Does Ramadan fasting trigger autophagy?
Probably to some degree, but the popular claim runs well ahead of the evidence. Most autophagy research comes from animal studies or from human protocols involving multi-day fasts and fasting-mimicking diets of five to seven days. The few human trials that measure autophagic flux directly are small, recent and inconsistent. A fifteen-hour fast followed by a full meal is a very different stimulus, and stating the benefit as settled fact is not honest.
Does fasting detox the body?
No, not in any clinical sense. The liver and kidneys clear metabolic waste continuously whether you are fed or fasted, and no fasting protocol has been shown to remove a named toxin they were otherwise failing to clear. There are genuine metabolic effects — increased fat oxidation, changed lipids, lower insulin during the fasting window — and those are worth talking about. "Detox" is marketing language that has attached itself to Ramadan and should be dropped.
Can people with diabetes fast during Ramadan?
It depends on the type and the control. The International Diabetes Federation places type 1 diabetes in the highest risk category and advises against prolonged fasting, because of the risk of severe hypoglycaemia and diabetic ketoacidosis. Many people with well-controlled type 2 diabetes can fast safely, but medication timing and doses need adjusting. Anyone with diabetes should have a pre-Ramadan assessment with their doctor several weeks in advance, and the IDF risk score should be repeated each year.
Are pregnant and breastfeeding women exempt from fasting?
Yes. Both are exempt in Islamic law, making up the days later or paying fidyah depending on circumstances and the school of law followed. On the medical side, research on breastfeeding found that milk macronutrients and infant growth were largely unaffected, but zinc, magnesium and potassium fell significantly and mothers' own nutrient intake dropped below recommended levels — which is why the researchers concluded it would be prudent to excuse nursing women.
Is "poverty is my pride" a hadith?
No. The saying al-faqru fakhri is widely quoted in devotional writing but is not authentic. Ibn Taymiyyah was asked about it directly and answered that it is a fabricated lie, unknown to the scholars of hadith, and that its meaning contradicts the Prophet's own words "I am the master of the children of Adam, and no boast." Al-Saghani classed it as forged, and Ibn Hajar records both verdicts in al-Talkhis al-Habir.
What is the reward for fasting?
The hadith qudsi in Bukhari and Muslim states: "Every deed of the son of Adam is for him, except fasting — it is for Me, and I shall reward it." Unlike other deeds, no multiplier is given. Commentators explain this variously: fasting is pure abstention with nothing outward to display, it was never offered to any false god in the way sacrifice and prostration were, and the reward is simply left unquantified. The same narration adds that the fasting person has two joys, one at breaking the fast and one on meeting his Lord.
What voluntary fasts are recommended?
Mondays and Thursdays weekly; the three white days, the 13th, 14th and 15th of each lunar month; the Day of Arafah for those not on Hajj, which the Prophet said he hoped would expiate the year before and after; Ashura on the 10th of Muharram, ideally with the 9th, expiating the previous year; and six days of Shawwal after Eid, which with Ramadan is likened to fasting the whole year. The fast of Dawud, alternate days, is described as the most beloved — and also as the limit, since the Prophet refused to let Abdullah ibn Amr exceed it.
What is fidyah and how is it different from kaffarah?
Fidyah is compensation for days that genuinely cannot be made up — chronic illness or the frailty of old age — and consists of feeding a poor person for each missed day, on the basis of Qur'an 2:184. Kaffarah is an expiation for deliberately breaking a fast without excuse, classically by intimacy, and is much heavier: freeing a slave, or fasting two consecutive months, or feeding sixty poor people. Days missed for a temporary reason such as illness, travel or menstruation are simply made up later, with no payment at all.
What is Laylat al-Qadr and when is it?
The Night of Decree, described in Surah al-Qadr as better than a thousand months — more than eighty-three years. Its date is deliberately concealed; the guidance is to seek it in the odd nights of the last ten of Ramadan, and while the 27th is the most commonly expected, that is a likelihood rather than a certainty. The concealment is the point: not knowing keeps people worshipping across ten nights rather than one. A'ishah was taught to say: "O God, You are Pardoning and love to pardon, so pardon me."
Why is Zakat al-Fitr paid before Eid?
Because of its stated purpose. In the narration of Ibn Abbas, recorded by Abu Dawud and Ibn Majah and graded hasan by al-Albani, the Prophet enjoined it as a purification for the fasting person from idle talk and obscene speech, and as food for the poor — adding that whoever pays it before the Eid prayer has given accepted zakat, and whoever pays after has given ordinary charity. The timing is what makes it work: it has to reach people while there is still time to buy food for the day of celebration.
Do other religions fast like Muslims do?
Fasting is nearly universal, but the form differs. Yom Kippur in Judaism is the closest parallel — about 25 hours with no food or water, and with the same exemptions for the ill, pregnant and nursing. Lent in Christianity is longer but far less restrictive in most Western practice. Theravada Buddhist monastics eat nothing after midday. Hindus keep fasts on lunar days and festivals, including Ekadashi, Shivaratri and, in Nepal, Teej. Zoroastrianism is the outlier: most authorities discourage food fasting and emphasise abstaining from wrongdoing instead.
Does fasting help you lose weight?
A little, and usually not lastingly. Ramadan studies typically find one to two kilograms lost and then regained. The reason is straightforward: Ramadan changes when people eat rather than how much, and several studies found total daily calorie intake essentially unchanged. If weight is your goal, what happens at iftar matters far more than the fast itself.
What breaks the fast?
Eating, drinking, smoking, marital intimacy, and deliberately inducing vomiting. Eating or drinking by genuine forgetfulness does not break it — the fast continues. Separately, lying, backbiting, obscene speech and losing your temper do not technically invalidate the fast but strip it of its purpose, on the hadith in Sahih al-Bukhari that God has no need of a person's hunger if they have not given up false speech.
How long is the fast in Nepal?
Nepal lies at roughly 27 to 28 degrees north, so fasting hours range from about thirteen hours when Ramadan falls in winter to around fifteen and a half at the height of summer. Because the Islamic calendar is lunar, Ramadan moves about eleven days earlier each year, so the length shifts gradually across a 33-year cycle.
Should you fast if you are ill?
No. Qur'an 2:185 exempts the ill and the traveller, and the same verse states that God intends ease and not hardship. Fasting through an illness that fasting will worsen is not rewarded piety. Days are made up when health returns, or fidyah is paid where a condition is permanent. If you become unwell during a fast — faint, confused, or with a racing heart — breaking it is the correct action, not a failure.
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