Study
Saw Palmetto Extract Improves Hair Growth in Adults with Thinning Hair
Taking a saw palmetto supplement daily for 90 days increased hair growth and density in adults experiencing hair thinning.
Hair HealthSupplementsMen's HealthWomen's Health
Summary
In plain language
Researchers studied the effects of a saw palmetto extract supplement on hair growth in adults who felt their hair was thinning. The study found that taking this supplement daily for 90 days led to noticeable improvements in hair growth and density for both men and women. This is important because hair thinning can be a distressing issue, and finding effective treatments is valuable. The study suggests that saw palmetto may be a helpful option for those looking to enhance their hair health naturally. If this is a concern for you, consider discussing this option with your healthcare provider.
Details
Use the full description to understand the study design, methods, and the limits of the findings.
This study was a 90-day, double-blind, placebo-controlled trial, meaning neither the participants nor the researchers knew who was receiving the actual supplement or a placebo. The supplement tested was made from saw palmetto extract, known for its potential to support hair health. Participants taking the supplement experienced significant increases in hair count compared to those taking a placebo.
The study involved 60 adults with self-perceived thinning hair, split into supplement and placebo groups.
Results showed noticeable hair growth improvements in the supplement group, with increased hair density.
While promising, the study was limited by its small size and short duration. More research is needed to confirm long-term benefits.
As always, before starting any new supplement, it's a good idea to discuss with your healthcare provider to ensure it's right for you.
Full Study
Open the original publication for the complete methods, outcomes, and source material.
Journal of cosmetic dermatology · RCT
Saw Palmetto Extract Improves Hair Growth in Adults with Thinning Hair
Published December 2025 · DOI 10.1111/jocd.70585
Opens at the publisher · external site · may require institutional access
Research Quality Score
Assessment
The study is a well-designed RCT with strong bias control measures. However, the small sample size and lack of transparency in protocol registration limit its statistical integrity. The involvement of a company in the study raises potential conflict of interest concerns. The study's relevance to seniors is limited due to the age range of participants.
Category Breakdown
| Category | Score | Rating |
|---|---|---|
| Study Design / Evidence Level | 10.0/10 | |
| Bias & Methods | 10.0/10 | |
| Statistical Integrity | 5.0/10 | |
| Transparency | 5.0/10 | |
| Conflict of Interest Disclosure | 5.0/10 | |
| Replication / External Validation | 0.0/10 | |
| Relevance to Seniors | 5.0/10 | |
| Journal Quality | 5.0/10 |
Additional Notes
The study's findings should be interpreted with caution due to the small sample size and potential conflicts of interest. Further research with larger, more diverse populations is needed to validate these results.
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