Beans and some other legumes, such as peas and lentils, have a reputation for causing gas. Beans contain high amounts of a complex sugar called raffinose, which the body has trouble breaking down. Beans are also rich in fiber, and a high intake of fiber can increase gassiness.

Do lentils cause a lot of gas?

Like beans, lentils also contain FODMAPs. These sugars may contribute to excessive gas production and bloating. However, soaking or spouting the lentils before you eat them can make them much easier on the digestive system.

How do I keep lentils from giving me gas?

Aim to soak your beans or lentils for at least 4 hours, and preferably overnight. Dump the soaking water (i.e. don't use it to cook the beans). Then be sure to give your beans/lentils a good rinse before cooking to wash away those gas-producing carbohydrates. Introduce them slowly.