All genuine green teas, black and white contain antioxidants that fight disease, because they come from the same plant. But green tea has much higher levels than most of catechin, a particularly powerful antioxidant. Although evidence to support the use of green tea in preventing or treating a health problem is not very clear, research in both animals and humans showed that some associations between these natural antioxidants of green tea and protection against health problems that affect men.
Many of the studies showing positive results were carried out in Asian countries, where large populations of men drink green tea on a régulière.Protection cardiovascular An animal study, supported by the World Health Organization and published in 2004 in The Journal of Nutrition, has shown that antioxidants in both green and black teas can lower both an systolic and diastolic of arterial pressure. A human study, conducted by researchers from Harvard Medical School, Brigham and Women's Hospital and the University of Florida, has confirmed that green tea can reduce blood pressure slightly and also reduces cholesterol and total levels of a marker of chronic inflammation, which is also linked to cardiovascular disease.
A review of studies epidemiological in Japan, also published in The Journal of Nutrition in 2008, has indicated that over half randomized studies performed in parts of this country has presented a profit positive of green tea or of green tea supplements on cardiovascular disease and stroke. Protection against cancerLes antioxidants in green tea can protect against some, but not all, cancers. Studies conducted in China indicated that regular tea drinks have half the risk of stomach and esophageal cancer development than those who do not drink as much tea. Yet another Chinese study found that the longer and more often men drank green tea, the higher the risk of prostate cancer.
However, studies underway at the National Cancer Institute (NCI) in the U.S. have found very little anti-tumor effect in patients with cancer of the prostate. The NCI also examines the ability of green tea to protect against skin cancer, as a supplement, and as an application topique.Autres avantagesUne Japanese study of 940 men, published in 2009 in the Journal of Periodontology found that Men who regularly drank green tea had fewer cases of gum disease. Researchers believe the association may be due to the power of green tea antioxidants to reduce inflammation. Green tea has also been found to have antibacterial and antibiotics that can boost the capacity of drugs currently in use and enable them to fight against some strains of the most recent of bacteria that are resistant to antibiotic treatments conventional.