Hormonal

Saw Palmetto

Berry extract from Serenoa repens used for mild urinary symptoms and sometimes hair thinning in adults.

Saw Palmetto

Berry extract from Serenoa repens used for mild urinary symptoms and sometimes hair thinning in adults.

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Overview

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Quick Take

Mixed evidence: only try a standardized extract for mild urinary symptoms or hair thinning, then reassess in 2-3 months.

Saw palmetto is a lipophilic extract from the berries of Serenoa repens, a small palm native to the southeastern US. Its fatty acids and phytosterols may partly inhibit 5-alpha-reductase and reduce local prostate inflammation. The best-studied use is mild prostate-related urinary symptoms, but results are mixed and depend heavily on extract quality. Smaller human studies also explore androgenetic hair loss. It fits adults wanting a cautious, nonprescription trial with modest expectations.

Proven Benefits

May reduce urinary symptoms

May improve peak urine flow

May support hair density

May reduce nighttime urination

Protocol

Amount

320 mg

Frequency

Once daily or 160 mg twice daily

When

With food if it causes nausea; otherwise any time of day — consistency matters more than timing.

Onset Time

4-8 weeks for urinary symptoms; 3-6 months for hair

Who Should Consider

Men 45+ with mild urinary frequency or nocturia

Adults with early androgenetic hair thinning

People wanting a nonprescription trial before medication

Users able to choose a standardized lipidosterolic extract

How It Works

Saw palmetto concentrates free fatty acids and phytosterols that may partially inhibit 5-alpha-reductase, reducing DHT activity in the prostate and hair follicles. It may also dampen local inflammatory signaling. Effects appear highly dependent on using a standardized lipophilic extract rather than raw berry powder.

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