Beta sitosterol is used primarily to treat enlarged prostates in men and high cholesterol, according to Drugs.com. It can also treat a variety of chronic inflammatory conditions and reduce menopausal symptoms.
Beta sitosterol is effective for lowering overall cholesterol levels but not for raising HDL levels, explains WebMD. It is also effective in treating inflammatory conditions such as fibromyalgia and rheumatoid arthritis.
Beta sitosterol is being investigated as a possible anti-cancer therapy because of its demonstrated effects on tumor cells. Beta sitosterol can be found naturally in many fruits and vegetables and is also manufactured as a dietary supplement, according to Drugs.com.