Possibility and the Ministry of Health, Labour and Welfare research group announcement that green tea lowers appearance of disease of progressed prostate cancer

The investigation now is due to the Ministry of Health, Labour and Welfare research group that centers on National Cancer Center. About 50,000 men who were up to 69 years old from 40 were targeted in the region in whole country 10 in 1990 and 1993 in this time of the research beginning. After the follow-up survey had been done for about ten years until 2004, it was brought together.

As a result, the occurrence of the prostate cancer confirms it to 404 people for the investigation period. 114 people had extended even to other internal organs exceeding the prostate cancer progressed, and, on the other hand, 271 people were the prostate cancer of the limit bureau that stayed in the prostate (As for 19 balance people, to which it corresponded is uncertain).

The tendency was examined about these appearance of disease patients. Then, the relation was not seen in drinking green tea and the entire prostate cancer. However, the risk of the progress prostate cancer was low like the group that often drank green tea, and the result in which half less than one cup came out in five groups or more especially a day when dividing by progress etc.The relation between limit bureau prostate cancer and green tea was not admitted on the other hand.

Green for drinking tea and prostate cancer risk

It is anxious that the risk increases oppositely in "1-2 cups". This seems a range of error.

There is a carcinogenesis controlling effect in pressing of a lot of catechins that green tea originally contains the cell proliferation of the relation between green tea and the prostate cancer, and effective of lowering the testosterone level of the male hormone that is one of the risk factor candidates with the prostate cancer etc. , etc. are causes of the result of the clarification this time or assume it in the report. In addition, it is added to press the extension of the tumor, and for the effect of controlling a lot of materials that appear at the metastasis to be reported by the experiment research about the catechin as the reason.

However, it is described that the number of cases of progressed prostate cancer is little, and a further research is necessary in the research now in the laboratory (There is a possibility of the chain "Healthy consideration is high", "A lot of green tea is drunk", "The medical examination is attentively received", and "Progress is stopped", too).

The result of relate to the number of for drinking cups to the entire prostate cancer of green tea looking like has come out in case of "Because the number of investigation verifications is little, might range of error" (When less than one cup is assumed to be one, five cups or more are risk decreases of 0.89 and 10 percent or more). In the estimate research from the statistical data, as for the sickness syndrome, it also takes time, and there is a possibility that "Error margin" is caused, too, if the number of people who actually developed doesn't become complete and it is not easy to conclude it as research results in which precision is quite high are the difficult points.

However, it is also true that the possibility "The catechin of green tea is effective against the prostate cancer" was presented. It is likely to become a chance to add green tea to the candidate of the loved drinkable water.