Recent scientific research has once again confirmed the potential anti-cancer properties of the popular beverage Green Tea(Camellia Sinesis).
The systematic review and meta-analysis study demonstrated that higher consumption of green tea(7 or more cups/daily) can reduce the risk of prostate cancer(PCa) and green tea catechins were effective for preventing PCa.
Prostate cancer is now considered to be the second most frequenty diagnosed cancer.
It is suggested that many phyto-chemicals found in natural plant-foods such as fruits, vegetables, nuts, seeds, herbs, camellia sinensis(tea) and so on, may have the ability to prevent cancer through various different mechanisms.
A growing body of research is building on the potential anti-cancer properties of tea(camellia sinensis).
The anti-cancer effect is largely thought to be attributed to the rich quantity of polyphenols found in tea, which studies have found to exhibit potent antioxidant and anti-inflammatory effect helping to combat oxidative stress and inflammation.
Both inflammation and oxidative stress are common factors in the development of most degenerative diseases including cancer.
Higher Consumption Of Green Tea Reduces Prostate Cancer Risk
The study aims were to determine the dose-response association of green tea intake with prostate cancer risk and the preventive effect of green tea catechins on PCa risk.
Seven observational studies and 3 randomized controlled trials were retrieved from Cochrane Library, PubMed, Sciencedirect Online, and hand searching.
The STATA (version 12.0) was applied to analyze the data. The relative risks (RRs) and 95% confidence intervals were pooled by fixed or random effect modeling.
Dose-response relations were evaluated with categories of green tea intake. Although there was no statistical significance in the comparison of the highest versus lowest category, there was a trend of reduced incidence of PCa with each 1 cup/day increase of green tea (P = 0.08).
Our dose-response meta-analysis further demonstrated that higher green tea consumption was linearly associated with a reduced risk of PCa with more than 7 cups/day.
In addition, green tea catechins were effective for preventing PCa with an RR of 0.38 (P = 0.02).
In conclusion, our dose-response meta-analysis evaluated the association of green tea intake with PCa risk systematically and quantitatively. And this is the first meta-analysis of green tea catechins consumption and PCa incidence.
Our novel data demonstrated that higher green tea consumption was linearly reduced PCa risk with more than 7 cups/day and green tea catechins were effective for preventing PCa. However, further studies are required to substantiate these conclusions.
References
[1] Green tea and the risk of prostate cancer: A systematic review and meta-analysis.
https://www.ncbi.nlm.nih.gov/pubmed/28353571
The information in this article has not been evaluated by the FDA and should not be used to diagnose, cure or treat any disease, implied or otherwise.
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