The Health Benefit of Drinking Green Tea

Tags: Green Tea, Teh Hijau

The Health Benefit of Drinking Green Tea

Manfaat dari Minum Tea Hijau

The Chinese have known about the medicinal benefits of green tea since ancient times, they are using it to treat everything from headaches to depression. In her book Green Tea: The Natural Secret for a Healthier Life, Nadine Taylor states that green tea has been used as a medicine in China for at least 4,000 years.

Bangsa China terkenal dengan pemanfaatan teah hijau untuk kesehatan sejak jaman purba, mereka menggunakan the hijau untuk menyembuhkan penyakit apa saja mulai dari sakit kepala sampai ke depresi. Nadine Taylor, di dalam bukunya Rahasia alamai untuk hidup lebih sehat, menyatakan bahwa the hijau telah digunakan sebagai obat di China sejak paling tidak 4000 tahun yang lalu.

Today, scientific research in both Asia and the Western country is providing hard evidence for the health benefits long associated with drinking green tea. For example, in 1994 the Journal of the National Cancer Institute published the results of an epidemiological study indicating that drinking green tea reduced the risk of esophageal cancer in Chinese men and women by nearly sixty percent. University of Purdue researchers recently concluded that a compound in green tea inhibits the growth of cancer cells. There is also research indicating that drinking green tea lowers total cholesterol levels, as well as improving the ratio of good (HDL) cholesterol to bad (LDL) cholesterol.

Sekarang, peneliti baik di Asia dan Negara Barat, mengumpulkan bukti yang kuat sehubungan dengan manfaat kesehatan dengan minum tea hijau. Contohnya pada tahun 1994, Journal of the National Cancer Institute mempublikasikan bahwa minum the hijau mengurangi resiko kanker esophagus pada Pria dan Wanita China hamper 60%. Peneliti Universitas Purdue baru-baru ini menyimpulkan bahwa kandungan di dalam the hijau menghalangi pertumbuhan sel kanker, reset ini juga membuktikan bahwa minum the hijau mengurangi total kadar kolesterol, memperbaiki rasio dari kolesterol baik (HDL) dari kolesterol jahat (LDL).

To sum up, here are just a few medical conditions in which drinking green tea is reputed to be helpful:

  • cancer
  • rheumatoid arthritis
  • high cholesterol levels
  • cardiovascular disease
  • infection
  • impaired immune function

What makes Green Tea so special ?

The secret of green tea lies in the fact it is rich in catechin polyphenols, particularly epigallocatechin gallate (EGCG). EGCG is a powerful anti-oxidant: besides inhibiting the growth of cancer cells, it kills cancer cells without harming healthy tissue. It has also been effective in lowering LDL cholesterol levels, and inhibiting the abnormal formation of blood clots. The latter takes on added importance when you consider that thrombosis (the formation of abnormal blood clots) is the leading cause of heart attacks and stroke.

Links are being made between the effects of drinking green tea and the "French Paradox." For years, researchers were puzzled by the fact that, despite consuming a diet rich in fat, the French have a lower incidence of heart disease than Americans. The answer was found to lie in red wine, which contains resveratrol, a polyphenol that limits the negative effects of smoking and a fatty diet.

In a 1997 study, researchers from the University of Kansas determined that EGCG is twice as powerful as resveratrol, which may explain why the rate of heart disease among Japanese men is quite low, even though approximately seventy-five percent are smokers.

Why don't other Chinese teas have similar health-giving properties? Green, oolong, and black teas all come from the leaves of the Camellia sinensis plant. What sets green tea apart is the way it is processed. Green tea leaves are steamed, which prevents the EGCG compound from being oxidized. By contrast, black and oolong tea leaves are made from fermented leaves, which results in the EGCG being converted into other compounds that are not nearly as effective in preventing and fighting various diseases.

For many years, green tea has been associated with positive health benefits. In a recent study by researchers at Purdue University, the nature of these benefits was identified. The researchers found that epigallocatechin gallate (EGCg), a compound found in the tea, inhibited the growth of cancer cells. A study from the University of Tokyo has shown that EGCg binds to CD4 cells, prventing HIV from binding to and destroying the cell in the process. Experts feel that the substances found in green tea, specifically EGCg, could lead to the devlopment of new HIV medications.

How Much Green Tea Do We Need?

Green tea leaves are potent in EGCg. The study suggests that consumption of four to five cups of green tea may slow cancer. However, the studies of green tea and it's binding to CD4 used concentrations many times higher than those that could be acheived by drinking green tea. However, understanding the mechanism by which EGCg binds to the CD4 cell could point scientists in new directions when researching new drugs and treatment targets.

Other Benefits

New evidence is emerging that green tea can even help dieters. In November, 1999, the American Journal of Clinical Nutrition published the results of a study at the University of Geneva in Switzerland. Researchers found that men who were given a combination of caffeine and green tea extract burned more calories than those given only caffeine or a placebo.

Green tea can even help prevent tooth decay! Just as its bacteria-destroying abilities can help prevent food poisoning, it can also kill the bacteria that causes dental plaque. Meanwhile, skin preparations containing green tea - from deodorants to creams - are starting to appear on the market.

Here are several best seller of High Quality of Green Tea. Click the icons below to see more detail.

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