A chemical found in green tea appears to slow the progression of prostate cancer, a study has suggested.
Green tea has been linked to a positive effect on a wide range of conditions, including heart disease, cancer and Alzheimer's disease. The research, in the US journal Cancer Prevention Research, found a significant fall in certain markers which indicate cancer development. A UK charity said the tea might help men manage low-risk tumours.
Although previous studies have shown benefits from drinking green tea - including some positive findings in relation to prostate cancer, there have been mixed results. In this study, Philadelphia-based researchers tested a compound called Polyphenon E.
They were looking for a number of biomarkers - molecules - including vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) which are indicators of developing cancer. They also looked for prostate specific antigen (PSA) - a protein only found in the prostate. Levels can rise if cancer is present.