By: Danniyal Shahid, Medical and Business Development, Saagara
Often times, I come across random facts that I just happen to remember. Not long ago, I learned that Japan is the largest consumer of green tea. My reaction was, “Oh cool”. Then, I came across a study suggesting that green tea can help prevent prostate cancer. This becomes even more interesting in light of the fact that Japan has one of the lowest rates of prostate cancer in the world.
The ancient brew has been linked with just about everything healthy, from boosting your immune system to preventing chronic diseases. Polyphenols, the active ingredients found in green tea (and many other fruits and vegetables, at that) inhibit proteins responsible for tumor growth and migration, namely, the Vascular endothelial growth factor (VEGF).
In theory, the explanation is simple. When tissue grows, more blood vessels grow within it, and they need VEGF for growth sustainment. Block the supply of VEGF, and the growth cannot be sustained, thus killing off the tissue. While high expression VEGF is seen in a variety of cancers, the study was conducted on patients who were about to undergo prostate removal surgery due to the enlargement of prostate from either hyperplasia or cancer.