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Saw Palmetto — Frequently Asked Questions

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Frequently Asked Questions

Is saw palmetto as effective as finasteride for BPH?

Head-to-head studies show mixed results. Some trials suggest comparable symptom relief for mild-to-moderate BPH, while others show finasteride is superior for reducing prostate volume. Saw palmetto's main advantage is its significantly better side effect profile — sexual side effects occur far less frequently than with finasteride. For mild BPH symptoms, saw palmetto is a reasonable first-line option before considering prescription medications.

Can saw palmetto help with hair loss?

Emerging evidence suggests saw palmetto may help slow androgenetic alopecia (male pattern baldness) by inhibiting DHT, the same hormone targeted by finasteride. A small 2012 RCT by Rossi et al. found that 320mg daily improved hair density in 38% of participants over 2 years. However, the evidence is far less robust than for finasteride or minoxidil, and saw palmetto should be considered a complementary approach rather than a primary hair loss treatment.

Does saw palmetto lower testosterone or PSA levels?

Saw palmetto does not lower total testosterone — it reduces DHT by inhibiting the enzyme that converts testosterone to DHT. Unlike finasteride, saw palmetto does not significantly lower PSA levels in most studies, which is actually an advantage because it does not mask prostate cancer screening results. However, always inform your urologist about saw palmetto use before PSA testing.

Full Saw Palmetto Guide

References

  1. (). Serenoa repens for benign prostatic hyperplasia. Cochrane Database of Systematic Reviews. DOI
  2. (). Effect of increasing doses of saw palmetto extract on lower urinary tract symptoms: a randomized trial. JAMA. DOI
  3. (). Comparitive effectiveness of finasteride vs Serenoa repens in male androgenetic alopecia. International Journal of Immunopathology and Pharmacology. DOI