HomeBlogHair LossPreventing Hair LossHow Effective is Saw Palmetto for Hair Loss Treatment?

How Effective is Saw Palmetto for Hair Loss Treatment?

In a world where the search for effective hair loss solutions continues to draw attention, saw palmetto for hair loss has emerged as a subject of interest among both researchers and individuals experiencing hair thinning. With its roots in traditional medicine, saw palmetto has transitioned into the spotlight of modern research, prompting questions such as “does saw palmetto help with hair loss?” This surge in interest is fueled by the emotional impact hair loss can have, affecting self-esteem and social perceptions, making the discovery of effective treatments more than just a cosmetic quest—it’s a journey towards reclaiming one’s confidence and well-being.

This article delves into the heart of the matter, exploring what saw palmetto is, and how it may combat hair loss, including its use in various forms like saw palmetto topical for hair loss and saw palmetto cream for hair loss. We will examine the scientific research surrounding its efficacy, recommended dosages and forms, potential side effects and safety concerns, and how it compares with other hair loss treatments. By providing a comprehensive overview, our goal is to offer clear, concise information that empowers individuals to make informed decisions about their hair care, all while upholding our commitment to compassionate understanding and medical professionalism.

Understanding Hair Loss and Its Causes

Androgenetic Alopecia Explained

Androgenetic alopecia, commonly known as pattern baldness, is a genetically predetermined condition marked by an excessive response to androgens, the male sex hormones that are also present in females. This condition affects up to 50 percent of both males and females and can manifest any time after puberty. The onset of pattern alopecia is closely tied to the activation of androgen receptors, which typically occurs after puberty.

 Notably, prepubertal castration and individuals with androgen insensitivity syndrome do not exhibit pattern baldness, highlighting the direct role of androgens in this condition.

Individuals with androgenetic alopecia typically exhibit elevated levels of dihydrotestosterone (DHT), a potent androgen, along with heightened levels of 5 alpha-reductase, an enzyme responsible for converting testosterone to DHT. This increased androgenic activity in the scalp leads to the progressive miniaturization of hair follicles, which is the hallmark of androgenetic alopecia. As the hair follicles shrink, the hair they produce becomes thinner and shorter, eventually leading to noticeable hair thinning and loss.

Role of Hormones in Hair Loss

Hormones play a pivotal role in regulating the hair growth cycle, which consists of growth, transition, and resting phases. Androgens, particularly dihydrotestosterone (DHT), are crucial in this regulation. They help control the hair growth cycle by influencing the duration of these phases. For instance, an overabundance of androgens can shorten the growth phase and extend the resting phase, leading to thinner hair strands and delayed growth of new hair.

In addition to androgens, other hormones like thyroid hormones and cortisol also impact hair growth. Abnormal levels of thyroid hormones can disrupt the hair growth cycle, leading to diffuse hair thinning across the scalp. Similarly, elevated cortisol levels, often a result of chronic stress, can halt hair growth by prematurely pushing hair follicles into the resting phase.

Furthermore, estrogen plays a dual role in hair growth and loss. High levels of estrogen, such as during pregnancy, can prolong the growth phase, resulting in thicker hair. Conversely, a drop in estrogen levels during menopause can lead to hair thinning. Certain conditions like polycystic ovary syndrome, which can lead to elevated testosterone levels, also contribute to hair loss in women by increasing the sensitivity of hair follicles to DHT.

Understanding the hormonal underpinnings of hair loss provides a foundation for exploring treatment options, such as saw palmetto, which may work by modulating the activity of 5 alpha-reductase and reducing the levels of DHT in the scalp. This approach aims to mitigate the hormonal influence on hair follicles, potentially slowing or reversing the process of hair thinning and loss.

What is Saw Palmetto?

Saw palmetto, scientifically known as Serenoa repens, is a small palm tree native to the subtropical Southeastern United States and the West Indies. This plant is distinguished by its dark red berries, which have been utilized by Native Americans for centuries as both a food source and a medicinal remedy. Today, saw palmetto is recognized for its potential therapeutic properties, particularly in the treatment of benign prostatic hyperplasia (BPH) and hair loss.

Historical Uses

Historically, saw palmetto has played a significant role in traditional medicine. Native American tribes, including the Seminoles of Florida and the Mayans, consumed its berries as food and used them to treat various health issues. The berries were believed to have antiseptic properties and were used to address reproductive and urinary conditions. In the 19th and early 20th centuries, saw palmetto berries were included in the US Pharmacopeia and the National Formulary, commonly prescribed by eclectic medicine practitioners for ailments related to the reproductive organs and urinary tract.

The medicinal use of saw palmetto was not limited to North America. In Europe, particularly in Germany, saw palmetto has been extensively used as an herbal alternative for managing BPH. The extract, rich in fatty acids and phytosterols like β-sitosterol, is believed to be the active component contributing to its therapeutic effects.

Current Popularity as a Remedy

In contemporary times, saw palmetto has gained popularity as a natural remedy for hair loss. 

The extract from the berries is thought to inhibit the enzyme 5α-reductase, which converts testosterone into dihydrotestosterone (DHT), a hormone associated with hair loss. By potentially reducing DHT levels in the scalp, saw palmetto may help prevent or slow down the process of hair thinning.

Saw palmetto is available in various forms, including whole dried berries, tablets, liquid extracts, and powdered capsules. While tablets and capsules are the most commonly studied forms, some people also use topical formulations like saw palmetto cream or serums for direct application to the scalp. Despite its widespread use, scientific research on saw palmetto’s effectiveness for hair loss is still evolving, with some studies suggesting possible benefits, while others indicate limited or no efficacy.

Additionally, saw palmetto is noted for its anti-inflammatory properties, which could further contribute to its role in hair loss prevention and other health benefits. As research continues, saw palmetto remains a subject of interest for those seeking alternative treatments for hair loss and other conditions linked to hormonal imbalances.

How Saw Palmetto May Work for Hair Loss

Mechanism of Action

Saw palmetto, known scientifically as Serenoa repens, plays a significant role in hair loss treatment due to its unique composition and biochemical properties. The extract of saw palmetto is rich in fatty acids (70–95%) and also contains phytosterols such as β-sitosterol, along with β-carotene, vitamin E derivatives, and polysaccharides. These components contribute to its therapeutic potential, particularly in addressing androgenetic alopecia and other forms of hair loss.

The primary mechanism through which saw palmetto influences hair loss is its action on hormonal pathways. It functions as a nonselective inhibitor of both isoforms of 5α-reductase, an enzyme that plays a critical role in the conversion of testosterone to dihydrotestosterone (DHT). DHT is a potent androgen that is linked to the miniaturization of hair follicles, a common cause of hair thinning and loss in individuals with androgenetic alopecia.

Inhibition of 5-alpha-reductase

Saw palmetto’s effectiveness in treating hair loss is largely attributed to its ability to inhibit the activity of 5-alpha-reductase. By blocking this enzyme, saw palmetto reduces the nuclear uptake of DHT and decreases the DHT binding capacity to androgen receptors by nearly 50%. This significant reduction in DHT levels in the scalp can slow down, and potentially reverse, the hair follicle miniaturization process that leads to hair thinning.

Moreover, saw palmetto increases the activity of 3α-hydroxysteroid-dehydrogenase, an enzyme that converts DHT into a weaker metabolite, androstanediol. This conversion further helps in reducing the androgenic impact on hair follicles, thereby supporting hair retention and possibly promoting regrowth.

Research supports the use of saw palmetto in various forms, including oral and topical applications, as a treatment for hair loss. Studies have shown that topical applications, such as saw palmetto extract combined with trichogen veg complex, can significantly increase hair count in individuals experiencing hair thinning. This suggests that saw palmetto may offer a dual approach to hair loss treatment—both through systemic and localized pathways.

In conclusion, saw palmetto serves as a compelling natural alternative for those seeking solutions to hair loss. Its ability to modulate hormonal effects, combined with anti-inflammatory properties, makes it a valuable component in the repertoire of hair loss treatments. As research continues to unfold, the potential of saw palmetto in supporting hair health remains a promising area for further exploration and application.

Scientific Research on Saw Palmetto

Saw palmetto (SP), recognized for its antiandrogenic properties, has been extensively studied for its potential benefits in treating hair loss conditions such as androgenetic alopecia (AGA) and telogen effluvium. Research involving both topical and oral supplements containing SP has shown promising results in improving hair quality and density.

Studies Supporting Its Efficacy

A variety of studies have highlighted the effectiveness of saw palmetto in managing hair loss. Five randomized clinical trials (RCTs) and two prospective cohort studies have documented the positive effects of SP supplements. Notably, participants experienced a 60% improvement in overall hair quality and a 27% increase in total hair count. Additionally, 83.3% of the subjects reported increased hair density, and 52% observed stabilization in disease progression with the use of SP-containing supplements in dosages ranging from 100–320 mg.

These findings are supported by experimental studies which demonstrate that SP extracts, rich in fatty acids and phytosterols like β-sitosterol, effectively inhibit the enzyme 5α-reductase. This enzyme is crucial in the conversion of testosterone to dihydrotestosterone (DHT), a key factor in hair loss. By reducing DHT levels, SP potentially mitigates the miniaturization of hair follicles associated with AGA.

Limitations of Current Research

Despite the encouraging outcomes, the scientific community acknowledges certain limitations in the current research on SP. Many studies have combined SP with other vitamins and minerals, making it challenging to isolate the effects of SP alone. This has led to calls for more rigorous, large-scale RCTs focused solely on SP to better understand its specific contributions to hair growth outcomes.

Furthermore, long-term studies are required to fully ascertain the efficacy and safety of SP treatments. Past research has primarily focused on short-term results, and there is a need for extended observation to evaluate long-term benefits and potential adverse effects. This is particularly important given the varying responses to SP treatments, which may not be as potent as those achieved with synthetic medications like Finasteride, although they present a natural alternative with fewer side effects.

In conclusion, while saw palmetto shows a lot of promise as a treatment for hair loss, further research is necessary to fully endorse its use as a reliable and effective remedy. The ongoing scientific exploration into SP will continue to clarify its role and efficacy in hair loss treatment protocols.

Forms and Dosages of Saw Palmetto

Saw palmetto is available in various forms, each offering unique pathways for addressing hair loss. Understanding the different formulations and their dosages is crucial for anyone considering this natural remedy.

Oral Supplements vs. Topical Solutions

Saw palmetto can be consumed orally or applied topically, with each method having its specific applications and benefits. Oral supplements typically come in the form of dried berry powder capsules, oily liquid extractions, or standard tablets. These supplements are known for their potency, particularly in the liquid extract form, which ensures a high concentration of active ingredients. Common dosages for oral intake range from 160 to 320 mg daily, which have been studied primarily in men. However, the appropriate dosage may vary based on individual health conditions and should be discussed with a healthcare provider.

Topical solutions, such as lotions or serums, incorporate saw palmetto in varying concentrations. For example, a specific lotion formulation might contain 20% saw palmetto extract, applied directly to the scalp. This method is beneficial as it allows the active ingredients to target the hair follicles directly. Topical application involves applying a measured amount, such as 5 mL of the lotion, to the scalp daily, which is then left for a short duration before washing.

Recommended Dosages

When considering saw palmetto for hair loss, the dosage and form depend significantly on the method of application and individual needs. For oral supplements, a common dosage is 320 mg per day, split into two doses of 160 mg each. This dosage has been used safely for up to three years in adults. It’s essential to note that while side effects are generally mild, they can include dizziness, headache, nausea, and gastrointestinal disturbances.

For topical applications, dosages are typically not measured in milligrams but rather in terms of concentration within the product. A standard approach might involve applying a lotion with a specific percentage of saw palmetto extract, ensuring that the active ingredients are adequately absorbed by the scalp.

In all cases, it is vital to consult with a healthcare provider before starting any new treatment regimen. This consultation is especially important given the variations in body chemistry and the potential interactions with other medications or health conditions. Saw palmetto’s effectiveness and safety have been observed in various studies, but individual results can vary, emphasizing the need for personalized medical advice.

Potential Side Effects and Safety Concerns

While saw palmetto is generally considered safe, it is important to be aware of its potential side effects and interactions with other medications. This awareness ensures informed decision-making when considering saw palmetto for hair loss treatment.

Common Side Effects

Saw palmetto is typically well-tolerated by most individuals when used appropriately. However, some people may experience mild to moderate side effects. The most commonly reported side effects include:

  1. Gastrointestinal disturbances: Individuals may experience symptoms such as nausea, diarrhea, and vomiting.
  2. Neurological effects: Headaches and dizziness are also reported, which may affect daily activities.
  3. Sexual health changes: A decrease in libido and sometimes erectile dysfunction have been noted, particularly in male users.
  4. Fatigue: Some users report a general feeling of tiredness or fatigue after consuming saw palmetto supplements.

In rare cases, more severe side effects have been documented, such as liver damage, pancreatitis, and even bleeding in the brain. These severe reactions are infrequent and often not directly linked to saw palmetto, but they underscore the need for caution and consultation with healthcare providers.

Interactions with Other Medications

Saw palmetto might interact with medications that affect blood clotting. Since saw palmetto can slow blood clotting, combining it with anticoagulant drugs like warfarin, clopidogrel, or even over-the-counter medications such as aspirin can increase the risk of bruising and bleeding. Here are some notable interactions:

  • Blood thinners: Warfarin and similar medications may have enhanced effects when used concurrently with saw palmetto, potentially leading to increased bleeding risks.
  • Hormonal therapies: Saw palmetto may reduce the effectiveness of hormonal medications, including birth control pills that contain estrogen. This interaction occurs because saw palmetto can decrease estrogen levels in the body.
  • Iron absorption: The tannic acid present in saw palmetto might reduce the absorption of iron from supplements or diet, so it is advisable to manage the timing of iron intake when using saw palmetto.

Additionally, saw palmetto should not be used in combination with other BPH treatments like finasteride unless directed by a healthcare provider, as it may cause unexpected effects due to similar mechanisms of action.

Given these potential interactions and side effects, individuals considering saw palmetto for hair loss should consult with healthcare professionals to ensure it is appropriate for their specific health conditions and medication profiles. This approach helps mitigate risks and aligns with the goal of achieving the best possible outcomes in hair loss management.

Comparing Saw Palmetto with Other Hair Loss Treatments

When evaluating the effectiveness of saw palmetto in treating hair loss, it becomes crucial to compare it with other widely recognized treatments. This comparison not only highlights the distinct properties of saw palmetto but also provides a broader context for understanding its role within the spectrum of hair loss solutions.


One of the most commonly compared medications to saw palmetto is finasteride, a well-established treatment for androgenetic alopecia. Both agents function by inhibiting the enzyme 5-alpha reductase, which is responsible for converting testosterone into dihydrotestosterone (DHT), a key player in hair loss. However, their efficacy and side effect profiles differ significantly.

Research indicates that finasteride is more effective than saw palmetto in increasing hair density and slowing hair loss progression. In a head-to-head randomized controlled trial (RCT), 68% of patients treated with finasteride reported higher hair density scores from baseline compared to 38% in the saw palmetto group. Despite saw palmetto’s moderate efficacy in hair regrowth, it was found to be inferior to finasteride in overall outcomes. Additionally, saw palmetto has been associated with mild adverse effects, mostly gastrointestinal, such as nausea and diarrhea, and some hormonal effects like early menarche in young girls or vasomotor symptoms in premenopausal females.

Other Natural Remedies

Apart from medications, other natural remedies like pumpkin seed oil have also been explored for their potential in treating hair loss. Similar to saw palmetto, pumpkin seed oil acts as a 5-alpha reductase inhibitor. While both are derived from natural sources and share a common mechanism of action, direct comparative studies are limited, making it challenging to definitively rank one above the other in terms of efficacy.

The appeal of natural remedies like saw palmetto and pumpkin seed oil lies in their perceived safety and fewer side effects compared to pharmaceutical treatments. However, the effectiveness of these natural alternatives is generally less pronounced, especially in cases of severe hair loss. The research suggests that the more advanced the hair loss, the less likely saw palmetto is to be effective.

In conclusion, while saw palmetto offers a natural alternative to traditional hair loss medications and has shown some promise in clinical studies, it generally does not match the efficacy of more potent treatments like finasteride.

 However, for individuals seeking a milder approach with potentially fewer side effects, saw palmetto might be a suitable option. As always, it’s advisable for individuals to consult healthcare professionals to tailor treatments according to their specific conditions and needs.


Throughout this article, we’ve embarked on an informative journey into the world of saw palmetto and its potential benefits for treating hair loss—highlighting not just its historical context and scientific backing but also fostering a deeper understanding of the emotional and physiological ramifications of hair thinning. The exploration of saw palmetto, from its traditional uses to contemporary applications in combating androgenetic alopecia, underscores our commitment to offering insights that bridge the gap between natural remedies and scientific evidence. Though studies suggest promising outcomes, the quest for comprehending and harnessing its full potential continues, emphasizing the importance of informed discussion and personalized approaches in managing hair loss.

Recognizing the sensitivity of this subject, we remind our readers that your journey with hair loss is deeply personal, and solutions should be as unique as the individuals seeking them. It should resonate that, despite saw palmetto’s potential, the landscape of hair restoration offers diverse options tailored to specific needs and conditions. Get a Free Hair Analysis and Quote; let’s navigate this path together, aiming to restore not just hair but also the confidence and well-being that come with it. As we move forward, embracing both traditional wisdom and modern science will undoubtedly continue to light the way for those affected by hair loss, providing hope and options in equal measure.


Is saw palmetto effective in treating hair loss?

Saw palmetto has shown some effectiveness in treating hair loss. In a study comparing saw palmetto and finasteride over two years, 38% of participants using 320 mg of saw palmetto daily experienced an improvement in hair loss, whereas 68% of those on 1 mg of finasteride daily saw improvements.

How quickly can you expect results from saw palmetto for hair loss?

Results from using saw palmetto for hair loss can vary, but one study reported that nearly half of the participants using a topical saw palmetto treatment saw an increase in hair count after four months.

What are the potential side effects of using saw palmetto?

While side effects from saw palmetto are uncommon, some reported issues include headaches, nausea, diarrhea, and dizziness. More severe but rare cases have included significant bleeding during surgery, liver damage, and pancreas damage.

Can saw palmetto effectively treat or prevent prostate cancer?

Research on saw palmetto’s effectiveness in treating or preventing prostate cancer is still inconclusive. Although some animal studies suggest it might inhibit tumor growth, there is no definitive proof that it can treat or reduce the risk of prostate cancer.

Fahmida is an intern doctor in Bangladesh with eight high-impact publications in Q1 journals on emerging health issues and was awarded the “Inspiring Women Volunteer Award” in 2022 by the UN Bangladesh.

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