Plants oils are a common source of sterols, phytosterols and beta-sitosterol. Beta-sitosterol has a chemical structure similar to cholesterol. Most people get a small amount of beta-sitosterol in their diets. However, most of the beta-sitosterol is not easily absorbed - of the 200 mg consumed orally, only about 5% is absorbed by the body.
Beta-sitosterol inhibits intestinal absorption of cholesterol by up to 50% by competing with the cholesterol. Beta-sitosterol also support a healthy prostate. It is also used to help boost the immune system.
People with sitosterolemia should avoid beta-sitosterol.
View Research related to Beta-Sitosterol.