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Common

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This article is educational and does not replace your doctor's advice. Seek urgent care for any red-flag symptoms.

What is it?

This article brings together practical, evidence-based advice for people with digestive or liver conditions (and for anyone) about four everyday situations: eating healthily when money is tight, eating through Ramadan, staying well during Hajj and Umrah, and travelling. The shared themes are the same: enough food and fluid, safe food handling, taking your medicines on time, and knowing the warning signs. For detailed Ramadan advice for GI and liver conditions, see our separate article “Ramadan with a GI or Liver Condition”; here we only give the main principles.

How common is it?

Travellers’ diarrhoea is the most common illness of travellers, and food- and water-borne illness and heat-related illness are well-recognised problems at mass gatherings such as Hajj. Many people cut back on healthy food when budgets are tight. We do not quote precise figures here.

Why does it happen?

Travellers’ diarrhoea is usually caused by bacteria (and sometimes viruses or parasites) in contaminated food and water, and is more likely when hygiene, refrigeration or water treatment are difficult, in crowded places, and in heat that lets germs grow quickly in food. Heat and sweating lose water and salts, and diarrhoea, vomiting, diuretics (water tablets) and laxatives add to the loss. Tight budgets push people toward cheaper, highly processed and fried foods and cut vegetables, protein and fibre.

Symptoms

  • Loose watery stools, cramps, nausea or vomiting during or after travel
  • Thirst, dark urine, dizziness, headache and tiredness in the heat
  • Heartburn, bloating or constipation from changed meals and routines
  • Low energy and poor concentration from skipped meals or low-protein diets
  • Flare-up of IBD, liver or stomach symptoms if medicines are missed

Red flags — seek urgent medical care

  • Blood or mucus in the stool, black stools, or vomiting blood

    May be a serious infection or bleeding. See a doctor urgently; do not take anti-diarrhoea tablets.

  • Fever of 38 °C or more with diarrhoea, or severe abdominal pain

    Possible invasive infection; seek medical care the same day.

  • Signs of dehydration: very little urine, dry mouth, sunken eyes, fast heartbeat, dizziness on standing, confusion

    Rehydrate with oral rehydration solution and seek medical care if not improving or if you cannot drink.

  • Heat illness: confusion, fainting, hot skin, very high temperature (about 40 °C), a fit, or collapse

    Heat stroke is an emergency. Call the emergency number (997 in Saudi Arabia), move to shade, and cool the body with water and fanning while waiting.

  • Diarrhoea lasting more than 2 to 3 days without improvement, or returning from travel with persistent diarrhoea, weight loss or fever

    Needs a doctor and stool tests; some infections need treatment.

  • Diarrhoea, vomiting or heat illness in a baby, young child, older adult, pregnant woman, or someone with IBD, cirrhosis, kidney disease, diabetes, a transplant or on immune-suppressing medicine

    Higher risk; seek medical advice early rather than waiting.

How is it diagnosed?

Most travellers’ diarrhoea is diagnosed by symptoms: three or more loose stools in 24 hours after travel. Stool tests are done if there is blood, fever, severe illness, diarrhoea lasting more than a few days, or a weakened immune system. In people with IBD, diarrhoea may be a flare or an infection and sometimes both, so a stool test before changing treatment is important. Dehydration is judged from thirst, urine, pulse, blood pressure and, when needed, blood tests.

What the latest science says

WHO and CDC Yellow Book guidance for travellers stress careful food and water choices (“cook it, boil it, peel it or leave it”), safe bottled or treated water, and hand hygiene. Oral rehydration solution (ORS) is the cornerstone of treating diarrhoea; WHO recommends low-osmolarity ORS prepared exactly as the packet says. The 2017 International Society of Travel Medicine (ISTM) guideline on travellers’ diarrhoea (Riddle et al.) recommends against routine antibiotic prevention for most travellers, because it brings side effects and promotes resistant bacteria, and finds the evidence for probiotics for prevention inconsistent. It says antibiotics should be reserved for moderate to severe illness, as prescribed, and that loperamide can ease non-bloody diarrhoea without fever in adults, but not if there is blood or high fever. For healthy eating on a budget, WHO healthy-diet guidance supports more vegetables, fruit, legumes, nuts and wholegrains and less salt, sugar and unhealthy fat. Studies comparing frozen with fresh vegetables find similar nutrient content, and canned oily fish such as sardines provides protein and omega-3 fats at low cost. For Ramadan, the evidence in people with liver, IBD or other conditions is mostly observational, so advice is individual (see the Ramadan article). Heat-related illness is a major issue at Hajj; public-health guidance emphasises shade, water, rest, and early recognition of heat exhaustion and heat stroke.

Outlook — what to expect

With simple planning most people travel, fast and make the pilgrimage without serious illness. Most travellers’ diarrhoea settles within a few days with fluids. Eating a modest, varied, home-cooked diet is affordable, and costs less than a diet based on takeaways and ready meals.

Treatment

Habits & Lifestyle

Plan ahead for food, water, heat, medicines and rest.

  • Wash hands with soap and water, or use an alcohol-based hand rub (at least 60% alcohol), before eating and after the toilet.
  • At Hajj and Umrah, stay in shade where you can, rest during the hottest hours, wear light clothing and carry an umbrella and a water bottle.
  • Check your urine: pale yellow means you are drinking enough; dark yellow means drink more (unless your doctor limits fluids).
  • Keep a regular medicine routine with phone alarms; time zone changes and crowds make missed doses common.
  • Get vaccines and travel advice before you go (the Saudi Ministry of Health lists requirements for pilgrims; hepatitis A and typhoid vaccines are often recommended for food- and water-borne disease). Immune-suppressed people should ask before any live vaccine.
  • Do not rely on a travel plan alone if your health is fragile; ask your doctor whether the trip is advisable, and for a letter in English and Arabic listing your diagnosis and medicines.

Diet

Four situations, with the main principles for each.

  • Healthy eating on a budget: build meals around legumes (foul, lentils, chickpeas, white beans), which are cheap sources of protein and fibre; eggs, laban or plain yoghurt, and canned or fresh fish; seasonal local vegetables and fruit; frozen vegetables (nutritionally similar to fresh and with less waste); rice, bread and oats with some wholegrain; and cooking oil in small amounts. Cook in batches and freeze portions, plan the week, and use leftovers.
  • Smart shopping: write a list, compare unit prices, buy staples in bulk when you can store them, choose canned fish in water or oil and canned beans, rinse canned beans and vegetables to cut salt, and limit sugary drinks, sweets, chips and fried fast food, which cost more per nutrient. If you follow a special diet (gluten-free, low-salt, or low-lactose), build it on naturally suitable foods such as rice, legumes, eggs, fruit and vegetables rather than costly specialty products.
  • Ramadan principles (details in our Ramadan article): at iftar, break the fast with water and a few dates and a light soup, then a balanced meal; at suhoor eat slow-digesting foods (oats, eggs, ful, yoghurt, vegetables, fruit) and do not skip it; drink water steadily between iftar and suhoor; limit fried, sugary and very salty foods, tea, coffee and cola; take medicines only on the plan agreed with your doctor; and break the fast if you feel unwell. Check with your doctor first if you have cirrhosis, IBD, ulcers, diabetes, a transplant or take time-critical medicines.
  • Hajj and Umrah food and water safety: eat food that is freshly cooked and served hot; avoid food that has sat out in the heat for hours (especially rice, meat, dairy, salads, and anything with mayonnaise or cream); eat fruit you wash and peel yourself; use sealed bottled or properly treated water, and avoid ice of unknown origin; be careful with street vendors and with free food packs, checking they are sealed, dated and have been kept hot or cold; and do not eat raw or undercooked meat, eggs or shellfish. Keep your own water and safe snacks in a small cool bag when possible.
  • Heat and dehydration: drink fluids regularly before you feel thirsty, and replace salts with ORS sachets if you are sweating a lot or have diarrhoea. If you take water tablets (diuretics), laxatives, or have cirrhosis, kidney disease or heart failure, ask your doctor beforehand how much to drink and what to do on hot days. Learn the signs of heat exhaustion (heavy sweating, headache, dizziness, nausea, cramps) and of heat stroke (confusion, collapse, very high temperature).
  • Preventing travellers’ diarrhoea: safe food and water, hand hygiene, and avoiding risky foods are what work. Routine antibiotics for prevention are not recommended, and the evidence for probiotics is inconsistent.
  • If you get diarrhoea: keep eating small bland meals as tolerated, and drink oral rehydration solution (ORS) made from a pharmacy sachet, mixed with safe water exactly as the packet says. Do not make it stronger or weaker. Sugary drinks, juice, and sports drinks are not a substitute for ORS, especially in children. Seek care for red flags above.
  • Travelling with diet restrictions: tell the airline, hotel or Hajj campaign in advance if you need gluten-free, low-salt, diabetic or soft meals; carry a card in Arabic and English describing your restrictions; pack safe snacks for delays; and ask how food is prepared. For coeliac disease, watch for cross-contamination in buffets and shared kitchens. For cirrhosis, avoid raw shellfish and salty foods and keep up protein. Tube-feed or supplement users should carry enough supplies.
  • Snacks to carry: plain biscuits or crackers, dates (if suitable), unsalted nuts (if tolerated), dried fruit, rice cakes, tinned tuna or sardines with a key-opener, sealed juice boxes, and sealed water. Avoid snacks that spoil in heat.

Medications

Carry medicines carefully and use them as prescribed. No doses are given here.

  • Carry all regular medicines in original labelled packaging in your hand luggage, plus extra for a few days in case of delay, and a doctor’s letter and prescription listing generic names. Some strong painkillers, sedatives and other controlled medicines are restricted when travelling, so check the rules of the country you enter (for Saudi Arabia, see the SFDA guidance).
  • If you use injectable or refrigerated medicines (such as biologics or insulin), carry them in an insulated bag with ice packs, never in checked luggage, and ask your doctor or pharmacist for the storage limits and a travel letter.
  • Consider carrying: oral rehydration sachets, a thermometer, an antacid if you already use one, paracetamol (not anti-inflammatory painkillers such as ibuprofen if you have ulcers, IBD, cirrhosis or kidney problems), sunscreen, plasters and hand sanitiser. Ask your doctor or pharmacist before taking antibiotics, loperamide or herbal remedies.
  • Do not use loperamide if you have blood in the stool, a high fever, or active colitis; and do not start antibiotics without medical advice.
  • Keep taking IBD, liver, transplant and other long-term medicines even if you have diarrhoea or vomiting, unless your doctor says otherwise, and call them if you cannot keep them down.

Procedures & Surgery

Help to know about if you become unwell during a trip.

  • In Saudi Arabia, call 997 for an ambulance in an emergency; during Hajj and Umrah, health centres and hospitals are available near the holy sites, and the Ministry of Health information line is 937.
  • Intravenous fluids may be needed for severe dehydration, and stool tests or blood tests are done if you are very unwell.
  • Travel insurance and a copy of your medical summary help with care abroad; carry the contact of your own gastroenterologist.
  • Elective endoscopy or procedures should be planned for after, not just before, a major trip; ask your doctor.

Living with the condition

  • Share a short written summary of your condition, food restrictions and medicines with travelling companions.
  • Build a few cheap, reliable, safe meals that you enjoy so that you are not tempted by risky food or expensive takeaway.
  • Allow extra rest after travel; the gut often needs a few days to adjust.
  • Ask your clinic whether support is available for food costs or nutrition supplements if you have difficulty affording them.

In the Saudi context

Ful medames, lentil soup, chickpeas, eggs, laban, canned sardines and tuna, frozen vegetables, rice and seasonal dates are widely available and affordable, and fit most healthy plans (watch the salt in canned and pickled items). Hajj and Umrah bring dense crowds, high temperatures and shared food, so water, shade and food hygiene matter more than usual; hot cooked food and sealed water are safest. Air travel to Saudi Arabia with injectables, controlled medicines or large supplies needs a doctor’s letter and a check of SFDA rules. Raw (baladi) milk and raw camel milk carry infection risks and are not advised, especially for pregnant women, older adults and people with liver disease or weak immunity. For fasting with a GI or liver condition, see the SGA Ramadan article and talk to your doctor early.

Questions to ask your doctor

Save this list or print it before your appointment — doctors appreciate prepared patients.

  1. Is it safe for me to fast, perform Hajj or Umrah, or travel with my condition?
  2. Which of my medicines are time-critical, and how should I take them during travel or fasting?
  3. How much should I drink in hot weather, given my kidney, heart or liver condition or my water tablets?
  4. What should I carry for diarrhoea, and when should I seek help?
  5. Can I have a letter for my medicines and a diet plan that fits my budget?

Trusted resources

Status: Approved for publication by SGA; individual clinician review is ongoing · Published 24/04/2026

For general education only; it does not replace your doctor’s advice. Individual clinician review of this guide is ongoing. SGA clinician? Review this guide