Sencha, a Japanese green tea, differs from other teas in its preparation. Instead of roasting the freshly plucked leaves, they are steamed to stop fermentation and to preserve their natural color. This process makes sencha greener and less bitter than other varieties of green tea. Preliminary research into the healthful properties of green tea suggests that the leaves of the Camellia sinesis plant, whether sencha or some other variety, have plenty of benefits to offer.
Cancer Prevention
In Eastern countries, such as China and Japan, where people consume green tea on a regular basis, the cancer rate is low as compared to Western cultures. The findings of several recent studies indicate the polyphenols in green tea may kill some cancerous cells and prevent their spread in the body, reports the University of Maryland Medical Center. Some of the cancers green tea may aid in controlling include bladder, breast, ovarian, colon, lung, pancreatic, prostrate, skin and stomach cancers. Although some of the findings look promising, other studies indicate no connection between green tea and cancer prevention, warns the University of Michigan Health System. With so many conflicted findings, more studies are needed before researchers can draw any solid conclusions.
Cardiovascular Health
Some population-based studies suggest that green tea may promote cardiovascular health. The antioxidant properties of green tea appear to lower total cholesterol and triglyceride levels, which reduces the risk of heart disease, coronary artery disease and atherosclerosis. Some researchers speculate that by drinking three cups of green tea a day, you can reduce your risk of a heart attack by 11 percent, reports the University of Maryland Medical Center. However, the U.S. Food and Drug Administration has not approved green tea as a method to treat or prevent heart disease.
Increased Immunity
Active compounds called polyphenols act as potent antioxidants to boost your immune system. According to eMedExpert.com, one type of green tea's polyphenols, called catechins, have antibacterial, antifungal and antiviral properties that may fight common infections, such as the flu virus and salmonella. Green tea may also aid in the prevention of food poisoning. More research is needed to confirm these effects.
Other Benefits
Drinking green tea may prevent bone loss and osteoporosis. A study at the University of Tokyo found that green tea consumption may increase bone mineral density, according to eMedExpert.com.
Green tea also promotes oral health by killing bacteria and preventing plaque buildup and bad breath. Additionally, the fluoride in green tea works to increase the resistance of tooth enamel to acids.
Some researchers believe the catechins in green tea may boost metabolism and support a weight loss program. The University of Michigan Health System reports that green tea may prevent the digestion of fat and increase energy expenditure, although more research is needed to confirm this and other beneficial effects.
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