Low FODMAP Thai Food: How to Enjoy Thai Cuisine with IBS
Low FODMAP Thai Food: How to Enjoy Thai Cuisine with IBS
By Dr. Onikepe Adegbola, MD PhD — Johns Hopkins-trained physician-scientist and founder of Casa de Sante
Key Takeaways
- Thai food has natural IBS advantages: rice-based, uses aromatic herbs heavily, and many traditional ingredients (lemongrass, galangal, lime, fish sauce) are zero FODMAP
- The main traps: garlic (in curry pastes and stir-fries), onion/shallot (in salads and curries), and large amounts of coconut milk (moderate FODMAP in excess)
- Coconut milk: 1/4 cup per serving is low FODMAP. A standard Thai curry serving often contains more — but you can request less coconut milk or eat a smaller portion.
- Thai food is more modifiable than most cuisines — requesting "no garlic" is common and restaurants are used to the request
Safe Thai Ingredients
- ✅ Lemongrass: The backbone of Thai cooking. Aromatic, safe in any amount.
- ✅ Galangal: Related to ginger. Used in soups and curries. Safe.
- ✅ Ginger: Fresh ginger in stir-fries, soups, and teas. Safe and beneficial for nausea.
- ✅ Kaffir lime leaves: Aromatic herb. Safe.
- ✅ Thai basil: Different from Italian basil. Safe and fragrant.
- ✅ Fish sauce: Fermented fish + salt. Low FODMAP at normal amounts (1-2 tbsp).
- ✅ Lime juice: Used everywhere. Safe.
- ✅ Chili: Fresh or dried. Safe (not a FODMAP, though may cause non-FODMAP irritation).
- ✅ Rice noodles: Rice-based = zero fructan. Pad Thai noodles are rice noodles.
- ✅ Jasmine rice: The staple. Safe.
Restaurant Orders
Best Options
- ✅ Pad Thai (modified): Rice noodles + shrimp or chicken + egg + bean sprouts + peanuts + lime + fish sauce. The traditional recipe uses tamarind, palm sugar, and fish sauce — all safe. Request no garlic. Many Pad Thai recipes use minimal or no garlic.
- ✅ Tom Yum soup: Lemongrass + galangal + lime juice + chili + shrimp + mushrooms (limit). The broth is light and aromatic. Ask about garlic — traditional Tom Yum may or may not include it.
- ⚠️ Green/Red/Yellow Curry: Curry paste typically contains garlic and shallot. The coconut milk base is moderate FODMAP in larger amounts. If you eat curry, limit your portion of the sauce or request a lighter curry (less coconut milk).
- ✅ Larb/Laab (Thai salad): Ground chicken or pork + lime juice + fish sauce + chili + mint + cilantro + toasted rice powder. Request no shallot. The meat and dressing are safe.
- ✅ Thai grilled chicken (Gai Yang): Marinated in lemongrass, coriander, garlic-infused oil (or request no garlic). Grilled until charred. Served with sweet chili dipping sauce (check for garlic).
- ✅ Steamed fish with lime: Whole fish steamed with lime juice, chili, fish sauce. Extremely IBS-friendly.
- ⚠️ Som Tum (papaya salad): Green papaya is safe. But traditional Som Tum contains garlic and long beans. Request no garlic.
Home-Cooked Low FODMAP Tom Yum
4 cups chicken broth + 3 stalks lemongrass (bruised, cut into 2-inch pieces) + 4 slices galangal + 4 kaffir lime leaves + 2 Thai chilies (sliced) + 1 lb shrimp + 2 tbsp fish sauce + juice of 3 limes + 1 tsp sugar + fresh cilantro. Bring broth to boil with lemongrass, galangal, and lime leaves. Simmer 10 minutes. Add shrimp, cook 3 minutes. Remove from heat. Add fish sauce, lime juice, sugar. Taste and adjust. Garnish with cilantro and chili. No garlic needed — the aromatics carry the flavor.
🛒 Thai Dinner Essentials
Casa de Sante Digestive Enzymes — Thai curry pastes almost always contain garlic and shallot. Even when requesting "no garlic," cross-contamination from the paste is common. Enzyme support handles these incidental exposures so you can enjoy Thai food without anxiety.
Medical Disclaimer: This article is for educational purposes only. Thai food is often very spicy — capsaicin can independently trigger GI symptoms in sensitive individuals, separate from FODMAP content. Dr. Adegbola is the founder of Casa de Sante.
