Saw palmetto has become one of the UK's most popular herbal supplements, particularly among men looking to support prostate health and maintain healthy hair. Derived from the berries of a small palm tree native to North America, saw palmetto has been used in traditional herbal medicine for generations.
Today, research continues to explore its potential role in supporting urinary health, healthy ageing and hair growth. While evidence varies depending on the condition being studied, saw palmetto remains a widely used natural supplement for overall wellbeing.
In this guide, we'll explain what saw palmetto is, its potential benefits, how it works and what to consider when choosing a supplement.
What Is Saw Palmetto?
Saw palmetto (Serenoa repens) is a small palm tree that grows naturally in the southeastern United States.
The dark berries of the plant are harvested and processed into extracts that are commonly used in food supplements. These extracts contain naturally occurring fatty acids and plant sterols, which are believed to contribute to the herb's biological activity. ¹
Saw palmetto supplements are commonly used to support:
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Prostate health
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Urinary function
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Hair health
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Healthy ageing
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General men's wellbeing
How Does Saw Palmetto Work?
Researchers believe saw palmetto may influence the way the body processes certain hormones, particularly dihydrotestosterone (DHT).
DHT is a hormone derived from testosterone that plays a role in several bodily processes. High levels of DHT have been linked with male pattern hair loss and age-related enlargement of the prostate. ²
Although research is ongoing, some studies suggest saw palmetto may help reduce the activity of the enzyme that converts testosterone into DHT, potentially supporting prostate and hair health. ²
Saw Palmetto Benefits for Prostate Health
The most common reason people take saw palmetto is to support prostate health as they get older.
As men age, the prostate naturally increases in size. This can contribute to lower urinary tract symptoms such as:
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Frequent urination
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Needing to urinate during the night
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Reduced urine flow
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Difficulty emptying the bladder
Some research suggests saw palmetto may help support urinary function in men experiencing mild lower urinary tract symptoms, although results between studies have been mixed. ³
Anyone experiencing persistent urinary symptoms should seek medical advice to rule out underlying conditions.
Can Saw Palmetto Help with Hair Loss?
Saw palmetto has also become increasingly popular as a supplement for hair health.
Because DHT is associated with androgenetic alopecia (male and female pattern hair loss), researchers have investigated whether reducing DHT activity may help support healthier hair growth. ⁴
Early studies suggest saw palmetto may help improve hair density and reduce hair shedding in some individuals, although larger clinical trials are still needed. Many hair supplements now include saw palmetto alongside nutrients such as biotin, zinc and selenium to support normal hair health.
Saw Palmetto and Urinary Function
Healthy urinary function becomes increasingly important with age.
Some individuals choose saw palmetto to help support:
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Normal urinary flow
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Bladder comfort
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Reduced nighttime urination
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Everyday urinary wellbeing
While some people report improvements, scientific evidence remains mixed and responses vary between individuals. ³
Who May Benefit from Saw Palmetto?
Saw palmetto supplements are commonly used by:
Men Over 40
As prostate changes become more common with age, many men choose saw palmetto as part of their wellness routine.
Individuals Concerned About Hair Health
People experiencing thinning hair may include saw palmetto alongside a balanced diet and healthy lifestyle.
Those Looking to Support Healthy Ageing
Some individuals take saw palmetto as part of a broader approach to men's health and long-term wellbeing.
Best Food Sources of Saw Palmetto
Unlike vitamins and minerals, saw palmetto is not found in everyday foods.
Instead, it is consumed as a concentrated extract made from the berries of the saw palmetto plant.
Supplements are available in several forms, including:
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Supplement Type |
Description |
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Capsules |
Most popular and convenient option |
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Softgels |
Often contain oil-based extracts |
|
Tablets |
Easy daily dosage |
|
Liquid extracts |
Alternative for those who prefer liquids |
Are There Any Side Effects?
Saw palmetto is generally well tolerated by most healthy adults when taken as directed. ¹
Occasionally reported side effects include:
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Mild stomach discomfort
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Nausea
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Headache
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Dizziness
Because saw palmetto may interact with certain medications, including blood-thinning medicines, it is advisable to speak with a healthcare professional before taking it if you have an existing medical condition or take prescription medication.
How to Choose a High-Quality Saw Palmetto Supplement
When selecting a saw palmetto supplement, look for:
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Standardised berry extract
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Clearly stated dosage
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Third-party quality testing
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Transparent ingredient lists
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Reputable manufacturers
Choosing a quality supplement helps ensure consistency and reliability.
Lifestyle Habits That Support Prostate and Hair Health
Supplements work best alongside healthy lifestyle habits.
To support long-term wellbeing, focus on:
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Regular physical activity
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A balanced diet rich in fruit and vegetables
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Maintaining a healthy body weight
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Staying hydrated
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Managing stress
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Getting sufficient sleep
These habits may contribute to overall prostate, urinary and hair health.
Why Saw Palmetto Has Become a Popular Supplement
Saw palmetto has become one of the most widely used herbal supplements for men looking to support prostate health, urinary function and healthy hair.
Although research continues to develop, current evidence suggests saw palmetto may offer benefits for some individuals, particularly when combined with healthy lifestyle choices.
As with any supplement, consistency, realistic expectations and choosing a high-quality product are key to supporting long-term wellbeing.
Saw Palmetto FAQ’s
What is saw palmetto used for?
Saw palmetto is commonly used to support prostate health, urinary function and healthy hair.
Can saw palmetto help with hair loss?
Some early research suggests saw palmetto may help support hair density in individuals with pattern hair loss, although further studies are needed.
How long does saw palmetto take to work?
Research suggests noticeable effects may take several weeks or months of consistent use, depending on the individual and the intended purpose.
Can I take saw palmetto every day?
Many people take saw palmetto daily as directed on the product label. Always follow the manufacturer's recommended dosage.
Is saw palmetto safe?
Saw palmetto is generally considered safe for most healthy adults when taken as directed. Individuals taking medication or managing health conditions should seek medical advice before use.
