1、 一、如何喝茶防癌1、绿茶的防癌作用国内外一些研究证明，无论哪种茶叶，对实验动物的化学致癌或转移性肿瘤，都有不同程度的防治效果。无论内源性或外源性的自由基都有致癌作用，但天然抗氧化剂则可清除自由基，因此这种天然抗氧化剂所具有的防癌、抗癌作用就受到了人们的重视。绿茶中富含“茶多酚”等天然抗氧化剂，在餐前或餐后饮用，多种抗氧化剂在清除自由基时会协同作用，更能显示出绿茶的防癌与抗癌的效果。2、绿茶多酚”是绿茶抗癌重要物质绿茶中的绿茶多酚含量是普通茶叶的五倍，绿茶能减少某些癌症的发生，但是科学家过去不清楚，是什么物质在怎样起预防作用，所以也无法决定，人一天应该喝多少绿茶才有效果。绿茶多酚可能只是绿茶中
2、有抗癌作用的物质之一。他们还发现，绿茶多酚分子结构跟抗癌药甲氨蝶呤片结构相近。DHFR 对健康细胞和癌细胞都至关重要，绿茶多酚对 DHFR 约束力很强，但比甲氨蝶呤片弱，所以对健康细胞副作用会比抗癌药小。3、普洱茶的防癌作用经对比多种绿茶的功效后，认定普洱茶杀减癌细胞的作用较为强烈，癌症患者长期饮用普洱茶后，癌细胞多边形收缩变圆，伪足缩量减少，失去贴附及游走能力，甚至脱落浮起丢失;残留者也变小变圆浓缩，核固缩，染色质凝结或消失，核及浆内出现空泡，核仁固缩或碎裂消失，染色体痉缩或相互凝结，核糖体减少，线粒体及内质纲扩张;RNA 合成减少，核分裂停止。这些变化证明，癌细胞在普洱茶的药理作用下，由变
3、性趋向死亡。二、喝茶可以防哪些癌1、喝茶防前列腺癌据新近的研究显示，不管是喝红茶，还是喝绿茶，都能够预防前列腺癌，而且还有助于降低胆固醇，减少由吸烟引起的细胞伤害，甚至可预防心脏病。国外研究人员对患者进行调查，他们手术前每天喝 5 杯绿茶、红茶等，手术后分析其血样及前列腺组织发现，在他们的组织样本中，酚类的含量较高，在癌细胞的培养液中加入红茶、绿茶或苏打后发现，癌细胞生长速度显著减缓了。2、喝绿茶对预防卵巢癌有好处研究人员最近通过实验发现，绿茶可以减少妇女卵巢癌的发病率，每天坚持饮用绿茶的妇女卵巢癌的发病率可比其他妇女减少将近 60%。研究人员为了弄清卵巢癌的病因，在 900 名妇女身上进行了
4、实验。在这些人中，254人已查明患有卵巢癌，652 人为健康妇女。结果发现，每天饮茶，尤其是绿茶可以大大降低妇女卵巢癌的发病率。除了饮茶，其他一些因素，诸如吸烟、口服避孕药、体育锻炼和卵巢癌家族史都会对卵巢癌产生各种不同的影响。3、喝绿茶可以预防皮肤癌研究人员最新研究发现，每天喝几杯茶可以减少患两种常见皮肤癌的危险。据路透社报道，科研小组在研究了 2200 名成年人的饮食习惯和健康状况之后发现，喝茶的人患鳞状细胞癌和基底细胞癌这两种常见皮肤癌的危险较小。每天喝茶一杯以上的人，患这两种癌的可能性比不喝茶的人低 20%至 30%。研究表明，茶里有一种名为 EGCG 的抗氧化剂，能限制紫外线辐射对皮
5、肤的伤害。在几十年一直喝茶、且每天至少喝两杯茶的人身上，这种效果更加明显。研究小组的专家指出，上述发现并不意味着只要喝茶就不用防晒。没有证据表明，喝茶可降低多次晒得皮肤发痛的人患皮肤癌的危险。A, how to drink tea anti-cancer1, the Green Tea anti-cancer effectSome researches prove that, no matter what kind of tea, chemical carcinogens or metastatic tumor of experimental http:/ animal, has the co
6、ntrol effect of different degree.Whether endogenous or exogenous free radicals are carcinogenic, but natural antioxidants can scavenge free radicals, so this kind of natural antioxidants haveanti-cancer, anti-cancer effect is concerned. “Rich tea polyphenols, natural antioxidants in Green Tea“, in
7、the drink before or after meal, synergistic effects of multiple antioxidants in scavenging free radicals will, more can show the effect ofanti-cancer and anti-cancer Green Tea.2, Green Tea polyphenol “is Green Tea anticancer substanceGreen Tea polyphenol content in Green Tea is five times the ordina
8、ry tea, Green Tea can reduce the occurrence of certain types of cancer, but scientists did notknow, is what matter plays a preventive role in how, so it cant decide, peopleshould drink a day how much Green Tea before there are results.One of the substances Green Tea polyphenols may only be Green Te
9、a has anti-cancer effects. They also found that, Green Tea polyphenols molecular structurewith anticancer drugs Methotrexate Tablets similar structure.DHFR are essential for healthy cells and cancer cells, Green Tea polyphenol on a very strong DHFR www.xbooo.org binding, but Methotrexate Tablets wea
10、k, so the healthy cells than the anticancer drug side effects small.3, Puer Tea tea anti-cancer effectBy comparison of various Green Tea efficacy, identified Puer Tea tea kill cancer cells more strongly reduced, long-term drinking tea after Puer Tea cancer patients,cancer cells rounded polygonal shr
11、inkage, reduction of pseudopod shrinkage, loss of adhesion and migration ability, and even loss of float off; residues are also smaller and round condensation, nuclear pyknosis, chromatin condensation or disappear, nuclear and cytoplasm vacuoles, pyknosis or fragmentation of the nucleolus disappear
12、ed, spasm reduction or mutual condensation of chromosomes,decreased ribosomes, mitochondria and endoplasmic reticulum expansion; the decrease of RNA synthesis, mitotic stop. These changes demonstrate,pharmacological effects of cancer cells in the Puer Tea tea, by the degeneration tend to die.Two, dr
13、inking tea can prevent what cancer1, tea anti prostate cancerAccording to the recent research shows, whether it is Black Tea drink, or drinkGreen Tea, can prevent prostate cancer, but also help to lower cholesterol, reduce the cell damage caused by smoking, or even the prevention of heart disease.T
14、he foreign researchers investigated the patients before operation, they drink 5 cups a day, Green Tea Black Tea, its blood and prostate tissue analysis found after operation, in a tissue sample them, high content of phenolic, adding Black Tea, Green Tea or soda in cultured cancer cells after finding
15、, cancer cell growthrate slow down.2, drink Green Tea beneficial to the prevention of ovarian cancerResearchers recently found through experiments, Green Tea can reduce the incidence rate of ovarian cancer in women, the incidence Green Tea every dayinsist on drinking in women with ovarian cancer rat
16、e is nearly 60% less than other women.Researchers in order to clarify the etiology of ovarian cancer, experiments were carried out in 900 women. In these people, 254 people have been identified with ovarian carcinoma, 652 healthy women. The results found, drink tea every day,especially Green Tea ca
17、n greatly reduce the incidence rate of ovarian cancer in women. In addition to tea, other factors, such as smoking, oral contraceptives,physical exercise and family history of ovarian cancer will have varying effects on ovarian cancer.3, drink Green Tea can prevent skin cancerThe new study research
18、ers found, drink a few cups of tea a day can reduce the risk of two common skin cancer.According to Reuters reports, research team found that in the study of 2200 adultseating habits and health status, the less dangerous drinkers squamous cell carcinoma and basal cell carcinoma is the two common ski
19、n cancer. Drink a cup ofmore people, the chance of this two kinds of cancer than non drinkers low 20% to30%.Research shows that, the tea is called EGCG antioxidant, can limit the ultravioletradiation on the skin damage. In the decades of tea, and drink at least two cups oftea on the human body, the effect is more obvious.Research group of experts pointed out, these findings do not mean just drink teawithout sunscreen. There is no evidence that drinking tea can reduce the risk for many times, tan skin pain of people suffering from skin cancer.双语对照
