Orange

Why orange is rated low

An orange is low FODMAP at about 1 medium (130g), which is why it is one of the steadier fruits to build a low FODMAP week around. The margin above that is small, though: a larger portion moves to moderate, and a much larger portion is high. Excess fructose is the group that builds as the amount grows. Nothing about the fruit changes between those points, only how much of it is in one sitting. The practical reading is simple. One orange is a comfortable serving, and a second one straight after is a different proposition.

What changes your risk

• Serving size About 1 medium (130g) is low, larger portions are moderate and much larger portions are high. One orange at a time is the habit that keeps it low, and a few extra segments from a second fruit are enough to move it.
• Fruit size Oranges vary a lot. If the ones in your bowl are unusually large, a single fruit can weigh well past the medium serve on its own, so weighing one once tells you whether your usual orange is the serve or more.
• Juice concentrates several fruits into one glass Juicing takes the sugars of more than one orange into a single serving and leaves the fibre behind. Orange juice has its own, much smaller low serve, so a glass of juice is not the same thing as about 1 medium (130g) of whole fruit.
• Stacking across the meal Excess fructose adds up across a meal. An orange after lunch is fine on its own, and an orange plus a fruit salad plus a honey-sweetened yoghurt is several excess fructose sources landing at once.
• Dried and candied forms Drying removes water and concentrates everything left, and candied peel adds sugar on top of that. Neither is rated here, so the fresh fruit figure does not carry across.

What else works

Orange is already a low option in the citrus aisle, and mandarins are another low FODMAP citrus that fills the same snack role, so alternating between them across the day is an easy way to get variety. Beyond citrus, strawberries, blueberries, raspberries, kiwi, pineapple and cantaloupe all sit low at their own serves. The things that look interchangeable but are not are the processed forms: a large glass of orange juice, dried orange slices and candied peel. If the goal is a juice-style drink, apple juice and pear juice are the wrong direction, since they concentrate what makes those fruits a problem in the first place.

How to keep it low

Buy loose oranges rather than a big bag, since a bag encourages eating through them and the moderate serve is only a few segments past one fruit. Keep them in the fridge if you want them to last, take one out at a time, and peel it on a plate rather than adding segments to a shared bowl where the count disappears. A whole orange carried as a snack self portions better than anything you have to measure. When ordering, a fruit plate often arrives as a mix, and the orange on it is rarely the issue while the mango or watermelon beside it might be, so it is worth picking rather than scooping. For a citrus hit in cooking without eating a second fruit, the zest carries a lot of flavour.

Common questions

how many oranges can i eat on a low fodmap diet

One orange, about 1 medium (130g), is low. Larger portions are moderate and much larger portions are high, so one at a sitting is the habit to keep.

is orange juice low fodmap

Juice is a separate food with a much smaller low serve, so a full glass sits well above it. The figure of about 1 medium (130g) applies to the whole fruit.

can i eat oranges in the elimination phase

Yes. At about 1 medium (130g) an orange is low FODMAP and fits in the elimination phase, as long as the serving stays at one fruit rather than one and a bit.

what about mandarins instead of oranges

Mandarins are another low FODMAP citrus, so they work well for rotating your snack fruit. They have their own serve, so treat them as a separate food rather than as a way to eat more citrus in one sitting.