Short answer: Yes — spinach is low FODMAP in Monash-tested portions. According to the Monash University FODMAP Program, both baby spinach and English (mature) spinach test green at everyday salad and sauté servings — but the safe portion is smaller than most people think.
Monash-Tested Serving Sizes
| Type | Low-FODMAP Serving | Moderate (FODMAP-P) | Notes |
|---|---|---|---|
| Baby spinach (raw) | 1.5 cups / 75 g | 2 cups+ | Higher tolerance than mature spinach |
| English spinach (raw) | 1 cup / 30 g | Above 40 g | Watch portion — fructans climb quickly |
| Cooked spinach | 1/2 cup / 75 g | Above 100 g | Volume shrinks — easy to overshoot |
| Frozen spinach | 1/2 cup / 75 g | Above 100 g | Drain well; check ingredient list for garlic |
Source: Monash University FODMAP Diet app (latest testing). All values are per-meal serves.
Baby vs Mature Spinach
Baby spinach is picked earlier and contains lower levels of mannitol and fructans — which is why Monash lists it at a larger safe portion (75 g) vs mature English spinach (30 g raw).
If you tolerate spinach well and want to eat larger salads, choose baby spinach as your base.
Cooked Spinach — Watch the Volume
2 cups of raw spinach cooks down to about 1/2 cup. That is exactly the tested safe serve — so a single large sauté easily exceeds the low-FODMAP limit. Cook it in batches and portion before plating.
Nutrition Wins
Spinach is nutrient-dense and safe for IBS in the right portion:
- Iron — plant-based non-heme iron; pair with vitamin C (lemon, red bell pepper) to boost absorption
- Folate — supports gut lining repair
- Vitamin K — important for people on restrictive diets
- Magnesium & potassium — often depleted during IBS flares
IBS-Friendly Ways to Use Spinach
- Salads: baby spinach base + grilled chicken + cucumber + walnuts + lemon-EVOO
- Sauté: garlic-infused olive oil + baby spinach + salt (60 seconds) — served alongside eggs
- Smoothies: 1 cup baby spinach + 1/2 banana (unripe) + lactose-free yogurt + strawberries
- Omelets: eggs + 1/2 cup cooked spinach + feta (40 g is low FODMAP)
- Pasta: stir into low-FODMAP marinara over gluten-free pasta
Check any add-in with our FODMAP Food Checker.
Watch Out For
- Creamed spinach — usually contains onion, garlic, and often wheat flour
- Spinach dip — nearly always high-FODMAP (onion, garlic, sour cream in excess)
- Green juices — concentrate FODMAPs; a single glass can exceed 300 g of leaves
- Spinach pasta filling (ravioli) — often contains ricotta, onion, and garlic
The Bottom Line
Spinach is a valuable low-FODMAP vegetable — just respect the portion. Stick to 1 cup raw English spinach, 1.5 cups baby spinach, or 1/2 cup cooked per meal, and you can enjoy it daily during elimination.
Want it in a full meal? Try our Low FODMAP Burrito Bowl with a baby spinach base.
This article is for informational purposes only and is not a substitute for medical advice. Consult a registered dietitian before starting a low-FODMAP diet.