Promote healthy gut bacteria

Pistachios are high in fiber, with 3 grams in one serving. Fiber passes primarily undigested through your digestive tract, while some types of fiber are digested by the healthy bacteria in your stomach, acting as prebiotics. The fiber is then fermented by gut bacteria, which converts it into short-chain fatty acids, which may provide a variety of health benefits, including a lower chance of developing digestive disorders, cancer, and heart disease.

Butyrate is one of the most useful short-chain fatty acids. Consuming pistachios has been demonstrated to boost the amount of butyrate-producing bacteria in the gut more than almonds.