Green tea significantly reduces prostate-specific antigen, a biomarker that indicates high risk of prostate cancer along with other risk factors.
![Catechins in Decaffeinated Green Tea Reduces Major Risk of Prostate Cancer in Men Catechins in Decaffeinated Green Tea Reduces Major Risk of Prostate Cancer in Men](https://images.medindia.net/health-images/1200_1000/green-tea-1.jpg)
The researchers administered decaffeinated green tea capsules called Polyphenon E twice a day that contained a mixture of green tea substance called ‘catechins’. The effects of Polyphenon E in 49 men were compared to placebo tablets in 48 men over a one-year treatment period.
Laboratory studies have shown that catechins inhibit cancer cell growth, motility and invasion, and stimulate cancer cell death.
The researchers found that people who had taken the green tea capsule had a significant decrease in prostate-specific antigen (PSA) levels.
PSA is a biomarker that in combination with other risk factors is used to screen patients for prostate cancer, and high levels signify a higher risk of prostate cancer.
Green tea catechins also prevent and reduce tumor growth in animal models, the study noted.
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