锯棕榈（Serenoa repens），在美国有超过2万男人使用

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.锯棕榈（Serenoa repens）在美国有超过9万男性用于治疗良性前列腺增生（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，这种草药可有效治疗症状，包括排尿太频繁，排尿困难或开始排尿困难以及需要在夜间排尿。 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《新英格兰医学杂志》上发表的一项进行良好的研究发现，锯棕榈在缓解BPH的症状和体征方面并不比安慰剂好。