Banana

Why banana is rated moderate

Banana lands at moderate because of its fructans, and the tested servings show how short the climb is. At 1 medium (118g) the fructan load is already enough to count as moderate rather than low, so a whole banana is a portion to respect, not a fruit to eat without thinking. Move up to 1⅜ medium (167g) and it is high. No tested serving of banana comes in low, so the useful way to hold it in a meal plan is as one counted portion rather than as a background food you reach for all day.

What changes your risk

• Serving size 1 medium (118g) is moderate and 1⅜ medium (167g) is high. The distance between those two rungs is small, so grabbing the largest banana in the bunch instead of an average one is a real change in load, not a rounding error.
• Ripeness Ripening converts starch into sugars, so a firm, just-yellow banana carries fewer fructans than a soft, heavily spotted one. It is the same fruit with a different load, which is why the bananas you leave on the counter all week are the ones most likely to cause trouble.
• Drying Drying removes water and concentrates everything left behind, so dried banana and banana chips carry the fructans of far more fresh fruit in far less food. The ladder tests fresh banana only, so there is no published dried serving to lean on.
• Blending and baking do not help Fructans survive the blender and the oven. A smoothie made with a whole banana holds the same fructans the whole banana held, and banana bread adds wheat flour, which is another fructan source on the same plate.
• Stacking with other fructan foods Fructans are the FODMAP most likely to pile up across a day: wheat bread, pasta and cereal, onion, garlic, and inulin or chicory root fibre added to bars and yoghurts. A moderate banana sitting on top of a wheat breakfast can push the meal over even though each item looked manageable on its own.

Swaps

When you want fruit that stays low rather than moderate, strawberries, blueberries, raspberries, oranges, mandarins, kiwi, grapes, pineapple and cantaloupe all fill the snack and breakfast-bowl role without the fructan climb. For the thick, sweet body banana gives a smoothie, blended strawberries or blueberries with lactose-free milk or lactose-free yoghurt get you close. Skip the fruits people reach for in the same moment that are not honest swaps: apple, pear, mango and watermelon are all worse choices than the banana you are replacing, dried banana chips concentrate the problem, and yoghurts or bars sweetened with inulin or chicory root fibre add fructans right back.

How to lower the load

Buy bananas green and eat them while they are firm and just yellow rather than letting a bunch go spotty on the counter. If you want them to last, peel and freeze slices at the firm stage, which also stops the whole bunch ripening into the softer, higher end at once. Pick from the smaller end of the bunch: banana is sold by the piece, and bananas vary enormously, so weigh one on a kitchen scale a couple of times until you can recognise 1 medium (118g) by eye. Ordering out is where it gets slippery, because a cafe smoothie or acai bowl often carries a whole large banana plus other fruit, and banana bread is wheat based on top of the fruit.

Common questions

how much banana is low fodmap

No tested serving of banana comes in low. The smallest published serving, 1 medium (118g), is moderate, and 1⅜ medium (167g) is high.

is banana high in fructans

Fructans are the subgroup banana carries, and they are what sets the rating. At 1 medium (118g) they put it at moderate, and by 1⅜ medium (167g) it is high.

are green bananas lower in fodmaps than ripe ones

Ripening turns starch into sugars, so a firm, just-yellow banana is lower in fructans than a soft, spotted one. The published servings still apply either way, since the ladder tests banana as a fruit rather than testing each stage of ripeness.

can i eat banana during the elimination phase

Banana is moderate at the smallest tested serving, and the strict phase is usually built from low servings, so moderate foods are typically kept out of it. What belongs in your own elimination phase is a question for the dietitian guiding you.