Overview

Oat (Avena sativa) is a type of cereal grain. People often eat the plant's whole seeds (oats), outer seed layers (oat bran), and leaves and stems (oat straw).

Oats might reduce cholesterol and blood sugar levels, and help control appetite by making you feel full. Oat bran might work by keeping the gut from absorbing substances that can lead to heart disease, high cholesterol, and diabetes. Oats seem to reduce swelling when applied to the skin.

Oat bran and whole oats are used for heart disease, high cholesterol, and diabetes. They are also used for high blood pressure, cancer, dry skin, and many other conditions, but there is no good scientific evidence to support these other uses.

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