Saw Palmetto for Hair
A popular herbal remedy suggested to help slow hair loss and encourage growth.
Also known as: Serenoa Repens • Sabal Serrulata
Overview
Saw Palmetto is an extract from the berries of the Serenoa repens palm tree. It is widely used as a natural supplement to support prostate health and hormonal balance. Its primary mechanism is believed to be the inhibition of 5-alpha-reductase, an enzyme that converts testosterone to dihydrotestosterone (DHT). Since DHT is a key factor in androgenetic alopecia (male and female pattern baldness), Saw Palmetto is a popular choice for hair loss prevention.
Key Benefits
Inhibits DHT Production
The active compounds in Saw Palmetto are believed to inhibit the 5-alpha-reductase enzyme, reducing the conversion of testosterone to DHT, a primary driver of pattern hair loss.
Anti-Inflammatory Properties
Saw Palmetto exhibits anti-inflammatory effects, which may help reduce inflammation in the scalp that can contribute to hair thinning.
Supports Hormonal Balance
By modulating androgen activity, Saw Palmetto can help support overall hormonal balance, which is beneficial for hair health.
Dosage & How to Take
A standard dose is 320mg per day, often split into two 160mg doses.
| Purpose | Dose | Notes |
|---|---|---|
| Androgenetic Alopecia (Hair Loss) | 320mg/day | Look for an extract standardized to 85-95% fatty acids and sterols. |
| Benign Prostatic Hyperplasia (BPH) | 160-320mg/day | Effective for prostate support, which shares the same DHT mechanism. |
Best Time to Take
Best taken with meals to minimize potential gastrointestinal upset.
With or Without Food
Recommended.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Lipid-Sterolic Extract | High | Hair loss and prostate health. | This is the most researched form and contains the highest concentration of active fatty acids and sterols. |
| Dried Berries/Powder | Low | General wellness. | Less potent and not standardized, making it difficult to achieve a therapeutic dose. |
Side Effects & Safety
Common
- Stomach discomfort
- Headache
- Dizziness
Rare
- Decreased libido
- Nausea
Contraindications
- Pregnancy or breastfeeding
- Hormone-sensitive conditions
- Upcoming surgery (may increase bleeding risk)
Interactions
May increase the risk of bleeding.
May interfere with the effectiveness of HRT.
Scientific Research
A randomized, double-blind, placebo-controlled trial to determine the effectiveness of botanically derived inhibitors of 5-alpha-reductase in the treatment of androgenetic alopecia
A 2012 study found that a supplement containing Saw Palmetto and Astaxanthin improved hair growth in men with androgenetic alopecia.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.