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Saw Palmetto and Its Benefits for Prostate Health: A Comprehensive Review of Studies

Written By: Nevert Badi
September 26th, 2023

Reading Time : 4 minutes

Saw Palmetto and Its Benefits for Prostate Health: A Comprehensive Review of Studies


Saw Palmetto, scientifically known as Serenoa repens, is a small palm tree native to the southeastern region of the United States. It has a long history of use in traditional medicine for various purposes, particularly in promoting prostate health. In recent years, there has been growing interest in exploring the potential benefits of Saw Palmetto for prostate health, leading to several studies investigating its efficacy. This article aims to provide a comprehensive review of the scientific evidence supporting the use of Saw Palmetto in promoting prostate health.


Understanding the Prostate

The prostate is a walnut-sized gland located just below the bladder in males. It plays a vital role in reproductive health by producing seminal fluid, which nourishes and protects sperm. As men age, the prostate can undergo physiological changes, leading to conditions such as benign prostatic hyperplasia (BPH) and prostate cancer.


Saw Palmetto and Benign Prostatic Hyperplasia (BPH)

Benign prostatic hyperplasia (BPH) is a non-cancerous enlargement of the prostate gland that commonly affects aging men. Symptoms of BPH include increased frequency of urination, weak urine flow, and incomplete emptying of the bladder. Saw Palmetto has been extensively studied for its potential benefits in managing BPH symptoms.

Several clinical trials have investigated the effects of Saw Palmetto extract on BPH symptoms. One notable study published in the Journal of the American Medical Association (JAMA) found that Saw Palmetto extract significantly improved urinary symptoms and peak urine flow rate in men with mild to moderate BPH when compared to a placebo. Another study, published in the British Journal of Urology International, reported similar results, with Saw Palmetto extract showing a reduction in symptom severity and an improvement in urinary flow.


Mechanisms of Action

The exact mechanisms by which Saw Palmetto exerts its effects on the prostate are still being studied. One proposed mechanism is its inhibition of the enzyme 5-alpha-reductase, which converts testosterone into dihydrotestosterone (DHT). DHT is known to play a role in prostate growth, and by inhibiting its production, Saw Palmetto may help reduce the size of an enlarged prostate.


Saw Palmetto and Prostate Cancer

Prostate cancer is one of the most common cancers affecting men worldwide. While Saw Palmetto is primarily associated with managing BPH symptoms, there have been some studies investigating its potential role in prostate cancer prevention and treatment.


Research on the anticancer properties of Saw Palmetto is still limited, and the results are inconclusive. Some laboratory studies have suggested that Saw Palmetto extract may inhibit the growth of prostate cancer cells and induce apoptosis (programmed cell death). However, more rigorous clinical trials are needed to determine its effectiveness and safety as a standalone treatment for prostate cancer.


Safety and Side Effects

Saw Palmetto is generally considered safe for short-term use. Common side effects, if any, are mild and may include gastrointestinal symptoms such as stomach pain, nausea, and diarrhea. It is important to note that Saw Palmetto may interact with certain medications, including hormonal therapies and anticoagulants, so it is recommended to consult a healthcare professional before starting any new supplementation.



Saw Palmetto has been extensively studied for its potential benefits in promoting prostate health, particularly in managing symptoms of benign prostatic hyperplasia (BPH). Clinical trials have shown promising results, with Saw Palmetto extract demonstrating improvements in urinary symptoms and urine flow rate. However, more research is needed to fully understand the mechanisms of action and long-term effects of Saw Palmetto on prostate health.


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