鋸棕櫚（Serenoa repens），在美國有超過2萬男人使用

Saw palmetto (Serenoa repens) is used by more than 2 million men in the United States for the treatment of benign prostatic hyperplasia (BPH), a non-cancerous enlargement of the prostate gland.鋸棕櫚（Serenoa repens）在美國被超過9萬男性用於治療良性前列腺增生（BPH），即前列腺的非癌性增生。 A number of studies suggest that the herb is effective for treating symptoms, including too-frequent urination, having trouble starting or maintaining urination, and needing to urinate during the night.大量研究表明，這種草藥可有效治療症狀，包括排尿太頻繁，排尿困難或開始排尿困難以及需要在夜間排尿。 But a well-conducted study published in the February 2006, XNUMX edition of the New England Journal of Medicine found that saw palmetto was no better than placebo in relieving the signs and symptoms of BPH.但是在XNUMX年XNUMX月XNUMX日的《新英格蘭醫學雜誌》上發表的一項進行良好的研究發現，鋸棕櫚在緩解BPH的症狀和體徵方面不比安慰劑好。