One of the great fears of international travel is getting sick from food. "Delhi belly," "Bali belly," "Montezuma's revenge" — every region has its euphemism for traveller's diarrhoea. The good news: with sensible precautions, you can eat street food, try local restaurants, and explore unfamiliar cuisines without spending your holiday in the bathroom.
Understanding the Risk
Traveller's diarrhoea affects 30-70% of international travellers, depending on destination. It is usually caused by bacteria (E. coli being the most common), not by "different food" or "spices." Your immune system simply is not adapted to the local bacterial environment. The risk is highest in South Asia, Southeast Asia, Africa, Central America, and the Middle East.
The Golden Rules
1. Eat Where Locals Eat
A crowded local restaurant or street stall has high food turnover — ingredients are fresh because they sell out daily. An empty restaurant means food sits longer, increasing bacterial growth. Follow the crowds.
2. Eat Cooked Food, Served Hot
Heat kills bacteria. Food that is cooked at high temperatures and served immediately is generally safe, regardless of the hygiene of the kitchen. The risk increases with food that sits at room temperature — buffets, pre-made sandwiches, and room-temperature displays.
3. Peel It, Cook It, or Forget It
The classic travel health mantra. Raw vegetables washed in tap water are a common illness source. Fruits you can peel (bananas, oranges, mangoes) are safe. Salads washed in local water are higher risk in developing countries.
4. Water Safety
- Drink bottled water (check the seal is intact) or filtered/purified water
- Brush your teeth with bottled water in high-risk destinations
- Ice is a grey area — in upscale restaurants, ice is usually made from filtered water. At street stalls, it may not be. When in doubt, skip the ice.
- Hot beverages (tea, coffee) are safe — the boiling kills bacteria
5. Build Up Gradually
Do not eat the most adventurous food on day one. Start with cooked, familiar dishes and gradually introduce more local specialties over 2-3 days. This gives your gut microbiome time to adapt.
Street Food Safety Checklist
- ✅ High customer turnover (popular stall = fresh food)
- ✅ Food cooked to order in front of you
- ✅ Vendor uses separate utensils for raw and cooked food
- ✅ Food served hot on clean dishes
- ❌ Pre-cooked food sitting at room temperature
- ❌ Raw meat or seafood displayed without refrigeration
- ❌ Vendor handling money and food with the same hands without gloves
- ❌ Flies on the food or preparation area
If You Get Sick
- Rehydrate: ORS (oral rehydration salts) are the most important treatment. Available at every pharmacy worldwide. Dissolve in clean water and sip throughout the day.
- BRAT diet: Bananas, Rice, Applesauce, Toast — bland foods that are easy to digest while your gut recovers.
- Probiotics: Start taking them before your trip and continue during travel. They help your gut adapt to new bacterial environments.
- When to see a doctor: If symptoms persist beyond 3 days, you have a fever above 38.5°C, you see blood in your stool, or you cannot keep fluids down — seek medical attention.
Travel Health Kit
Pack these essentials:
- ORS packets (6-8 for a two-week trip)
- Probiotics
- Loperamide (Imodium) for symptom management
- Antibiotics (get a prescription from your doctor before travel for emergency use)
- Hand sanitiser (60%+ alcohol)
- Activated charcoal tablets
Street food is one of the best parts of travel — do not let fear prevent you from experiencing it. With sensible precautions, the vast majority of travellers eat adventurously and stay healthy. ZFORB packages include curated food recommendations and local dining guides for every destination.
