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The low-FODMAP diet is a tricky thing ...

Unlike other food tribes (paleo, vegan, vegetarian, gluten-free), the low-FODMAP diet is not a permanent lifestyle change—instead, it functions more like an elimination diet. You start out avoiding foods that contain high levels of FODMAPs (which are carbs that pull water into the intestinal tract, making them harder for your body to digest), and then slowly reintroduce foods to pinpoint exactly what upsets your body.

If you frequently deal with symptoms of gas, bloating, cramping, constipation, and/or IBS—and you’ve already ruled out celiac disease—the low-FODMAP diet is an effective way to narrow down what might be ailing you.

Here are 15 foods to eat (and avoid) when you're starting out.