The female drinks the green tea to be possible the effective against cancer

Drinks the green tea frequently the female contracts stomach cancer's risk to be low. This is the Japanese work province seminar (director researcher · Japanese State-run Cancer Center Prevention Research department minister Tianjin Jinchang eldest sons) the result which obtains in the large-scale epidemiology research. Green tea's against cancer effect in prevents lower part the stomach the cancer aspect outstandingly, 1 day drinks 5 cups of green tea the female with drinks the insufficient 1 cup of people to compare, contracts stomach cancer's risk only then the latter's half. But the male has not displayed the obvious prevention effect.

　　This research take analyzes the green tea and the stomach cancer disease incidence rate relations as a goal, to lived has carried on 7~12 tracking investigation in the Japanese 7 area 40~69 year-old male and female residents. Belongs to foresightedness to study (ProspectiveStudy), to be possible to obtain the redundant reliable in the epidemiology research data.

　　This research also believed that the green tea from includes the rich son caffeine to the health effect in the green tea (Catechin) the ingredient. The son caffeine is in the red wine ingredient common one kind of polyphenol material (Polyphenol), has function which the oxidation resistance, the impediment nitrosamine (Nitrosamine) produces (impediment to cancer development). Before this, once had the animal experimentation and many research indicated that the green tea has the prevention stomach cancer's effect.

　　However, the epidemiology research originally nearly uses through the data precision did not calculate that the high case conducts the research the method. Moreover recently, Japan one after another announces foresightedness findings call the green tea to the stomach cancer and the non-prevention effect, thus has initiated the argument. Although these forward-looking research institute obtains conclusion: Drinks the green tea the human compares the human who does not drink the green tea to contract the stomach cancer risk to lower this tendency only to be restricted in the female, but cannot deny the green tea completely in light of the prevention effect.

　　This research demonstrated that in becomes the analysis object 72,943 people (masculine 34,832 people, feminine 38,111 people), some 892 people (masculine 665 people, feminine 227 people) in track period has suffered from the stomach cancer. Drinks the quantity 1 day of insufficiency 1 cup of artificial standards by the green tea, to replied separately 1 day drank 1~2 cup, 3~4 cup and 5 cup of above person's stomach cancers is sick the risk to carry on the computation, 1 day drank the green tea 5 cups of above females to be possible the risk rate control in 33%. Moreover, with drinks the green tea to compare frequently, the age big, smokes much, as well as eats tendency frequently and so on vegetables and fruit is more prominent in the male, therefore in computation time has removed these aspect influence. other, takes the forward-looking research, this time divided into the stomach the top and bottom two parts to carry on for the first time a more detailed analysis. The reason that does this, is because the stomach cancer takes one kind of illness existence risk factor because of the spot to be different, but not same level other need to consider stratification plane. The result proved that regarding stomach's upside, cannot determine whether the green tea does have the prevention effect to the men and women, but regarding stomach's lower part, 1 day drinks 5 cups of green tea the female contracts stomach cancer's risk only drinks green tea insufficient 1 cup of person's half.

　　According to this seminar said that has not produced the biological controls cancer effect in stomach's upside green tea is because with drinks time the green tea the temperature concerns. The hot drink might cause carcinoma oesophagi and the inflammation were already many research to obtain the proof. Therefore, the seminar suggested when drinks the green tea do not too hotly for good.

　　Finally this research project believed that this second son has not displayed tangible effect existence many kinds of reasons, for instance will not have smoked the influence which and so on possibly brings to remove in outside and so on. However, looking from other forward-looking research, the green tea brings the prevention stomach cancer's effect hopefully to the female.