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How to learn the correct tea health tea anti-cancer

Tea is the world's three most healthy drink a lot of people but also to tea as an important method of cancer prevention. But how to properly drink tea, can effectively prevent cancer?


Iranian researchers have published research in 2009 that the day to drink a cup of hot tea, easy to increase the risk of esophageal cancer. Moreover, when the water temperature is between tea 65 ℃ ~ 69 ℃, will double the risk of esophageal cancer, when the water temperature exceeds the tea 70 ℃, esophageal cancer incidence will increase by 8 times. After pouring tea if you finish within two minutes, four minutes before drinking will rise suffering from esophageal cancer risk ratio of about 5 times. While another study found that drinking tea, tea temperature between 56 ℃ ~ 60 ℃, more favorable to health.


In addition to tea temperature may increase cancer risk, Taiwan nutritionist Zhang Silan reminder, if pesticide residues in tea, may not be conducive to health when tea. If you worry about pesticide residues, the first bubble in the water drained, open the lid when the tea, do not choke up steam, so some pesticide substances will evaporate with the steam. When you purchase tea, we should try to choose organic tea, safer. So, tea anti-cancer principle is kind of how it, in daily life which tea to anti-cancer can it?


First, how tea anti-cancer

An anti-cancer effect of green tea

Some researches proved that no matter what kind of tea, chemical carcinogenicity in experimental animals or metastatic tumors, have varying degrees of control effect. Whether endogenous or exogenous radicals have carcinogenic effects, but natural antioxidants can scavenge free radicals, so this natural antioxidant that has anti-cancer, anti-cancer effect on the subject of people's attention. Green tea is rich in "polyphenols" and other natural antioxidants, before or after dinner drink, a variety of antioxidants scavenge free radicals when will synergy, can show green tea's anti-cancer and anti-cancer effects.

2, green tea polyphenols, "is an important green tea anti-cancer substance

Green tea green tea polyphenol content is five times the ordinary green tea can reduce the incidence of certain cancers, but scientists do not know the past, what matter how play a preventive role in, so it can not be determined how much green tea a day should drink only effective.

Green tea polyphenols in green tea may be just one of substance anticancer effects. They also found that green tea polyphenols molecular structure with the anticancer drug methotrexate (Methotrexate) structure similar.

DHFR healthy cells and cancer cells are essential, green tea polyphenols on DHFR binding strong, but weaker than methotrexate tablets, so the healthy cells of side effects will be smaller than the anti-cancer drug.

3, anti-cancer effects of tea

After comparing the effectiveness of a variety of green tea, tea found to kill cancer cells more strongly reduced, long-term consumption of tea in cancer patients, cancer polygon contraction rounded pseudopodia reduce shrinkage, loss of adhesion and migration capabilities, or even fall off float missing; residues were also smaller round enrichment, nuclear condensation, chromatin condensation or disappeared, vacuoles appeared in nuclear and plasma, condensation or fragmentation nucleolus disappear, shrink or mutual spasm chromosome condensation, ribose body reduced, mitochondria and endoplasmic Gang expansion; RNA synthesis decreased fission stops. These changes prove that the cancer cells in the pharmacological effects of tea, death by degeneration trend.


Second, what tea can prevent cancer

1, tea anti-prostate cancer

According to recent research shows that, whether it is to drink black tea, or green tea, are able to prevent prostate cancer, but also helps to lower cholesterol, reduce cell damage caused by smoking, or even prevent heart disease.

Foreign researchers on 20 male patients with prostate cancer to investigate, they drank five cups of green tea before surgery, tea and other day after surgery to analyze the blood and prostate tissue found in their tissue samples, higher levels of phenols, after addition of black tea, green tea or soda cancer cells found in the culture medium, the growth rate of cancer cells was significantly slowed down.

Two, drinking green tea is good for the prevention of ovarian cancer

Australian and Chinese researchers recently found through experiments that green tea can reduce the incidence of ovarian cancer in women, the incidence of drinking green tea every day for women ovarian cancer than other women reduced by nearly 60%.

Researchers Curtin University, Australia and China, Zhejiang Cancer Hospital in order to ascertain the cause of ovarian cancer in 900 women who carried out the experiment. Of these, 254 people have been identified with ovarian cancer, 652 women human health. It was found that drinking tea every day, especially green tea can significantly reduce the incidence of ovarian cancer in women. In addition to tea, a number of other factors, such as smoking, oral contraceptives, physical exercise and a family history of ovarian cancer will have different effects on ovarian cancer.


3, drinking green tea can prevent skin cancer

New Hampshire, Dartmouth Medical School researchers have found that drinking a few cups of tea a day can reduce the risk of two common skin cancer risk.

After According to Reuters, the Institute research team led by Judy Rees studied 2,200 adults in the eating habits and health status found that people suffering from tea squamous cell carcinoma and basal cell carcinoma, two common skin less risk of cancer. People over a cup of tea a day, the likelihood of suffering from both cancer 20-30% lower than non-tea drinkers.

Studies have shown that there is a tea called EGCG antioxidant, and can limit the ultraviolet radiation damage to the skin. In the decades have been drinking tea, and drink at least two cups of tea a day person, this effect is more pronounced.

Experts Study Group noted that these findings do not mean that as long as the tea would not have sunscreen. There is no evidence that drinking tea may reduce the risk of several people who tan skin sore skin cancer.