Saw Palmetto
The History
Saw palmetto, derived from the berries of the Serenoa repens plant, has been used for centuries in traditional medicine to treat various conditions, including urinary tract issues and hormonal imbalances. Its potential for combating hair loss was discovered more recently, as researchers identified its ability to inhibit the enzyme 5-alpha reductase, which converts testosterone into dihydrotestosterone (DHT)—the primary hormone responsible for androgenetic alopecia (pattern hair loss). Unlike pharmaceutical treatments like finasteride, saw palmetto is a natural, plant-based alternative that has gained popularity for its mild side-effect profile.
The Good
Saw palmetto works as a natural DHT blocker, helping to reduce the hormone’s impact on hair follicles. By doing so, it can slow hair thinning and support healthier hair growth. Studies have shown that oral and topical saw palmetto can improve hair density and volume over several months of consistent use. One study found that saw palmetto extract improved hair regrowth in over 60% of participants after 24 weeks, making it a promising option for those seeking a more holistic approach to hair loss treatment.
The Bad
While generally well-tolerated, saw palmetto is not as potent as pharmaceutical DHT blockers like finasteride or dutasteride. This means its effects may be less noticeable or take longer to appear, particularly for individuals with advanced hair loss. Side effects are rare but can include mild stomach discomfort, headaches, or dizziness, particularly with oral supplements. Additionally, because it is a natural supplement, saw palmetto is not FDA-approved for hair loss, and the quality of products can vary widely between brands.
The Ugly
Saw palmetto, like most hair loss treatments, requires long-term use to maintain results. Discontinuing the treatment can lead to the return of hair thinning as DHT levels resume their effects on hair follicles. Furthermore, its efficacy may not be sufficient for individuals with severe hair loss, making it better suited as part of a broader treatment plan rather than a standalone solution.
How to Get It
Saw palmetto is widely available as an over-the-counter supplement, typically in capsule or liquid extract form. It is also a common ingredient in topical hair loss products like shampoos and serums. When choosing a saw palmetto product, look for standardized extracts with a concentration of at least 85% fatty acids and sterols, as these are the active components responsible for its DHT-blocking properties.
Which Works Better: Oral vs. Topical?
Both oral and topical formulations of saw palmetto have shown promise in treating hair loss. Oral supplements are more widely studied and may provide more consistent DHT reduction, while topical formulations are often combined with other ingredients like minoxidil to enhance efficacy. For best results, a combination of oral and topical saw palmetto may be considered.
