Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Saw palmetto (Serenoa repens) is widely used to support the male reproductive system, particularly for symptoms associated with benign prostatic hyperplasia (BPH), a noncancerous enlargement of the prostate gland. The traditional use of saw palmetto by Native American populations included treatment of urinary and reproductive system issues. In modern times, its use has been primarily focused on alleviating lower urinary tract symptoms related to BPH, such as frequent urination, decreased urinary flow, and nocturia.

Scientific studies on saw palmetto extract have produced mixed results. Some randomized controlled trials and meta-analyses suggest that saw palmetto may offer modest improvements in urinary symptoms and flow measures compared to placebo, though it is generally less effective than standard pharmaceutical treatments such as alpha-blockers and 5-alpha-reductase inhibitors. The proposed mechanism of action includes inhibition of 5-alpha-reductase, the enzyme that converts testosterone to dihydrotestosterone (DHT), a hormone that contributes to prostate enlargement. However, several large, well-conducted studies (e.g., the STEP and CAMUS trials) found no significant difference between saw palmetto and placebo for BPH symptoms.

Overall, saw palmetto is justified as a reproductive system support agent based on both its traditional use and some scientific evidence, though the clinical benefits appear to be modest and inconsistent. It is generally considered safe for short-term use, but more research is needed to clarify its efficacy and long-term safety.

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Products containing saw palmetto

Nature's Sunshine DHEA-M
Nature's Sunshine Men's Formula (With Lycopene)
Nature's Sunshine PS II
Nature's Sunshine Saw Palmetto
Nature's Sunshine Saw Palmetto (Concentrated)
Nature's Sunshine VitaWave
Nature's Sunshine Men's X-Action Reloaded