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Green Tea Research
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Some studies suggest drinking one cup of green tea a day supports good health, while others suggest drinking five cups of green tea a day will achieve the same result. Studies are mixed over green tea, as are green tea research findings. The exact mechanism in green tea that promotes health benefits is relatively unknown, but researchers suggest it may be related to the high levels of polyphenols-natural antioxidants-in green tea.
- A research team from Tohoku University in Sendai, Japan found that adults who drank at least five cups of green tea daily demonstrated a lower cardiovascular risk than those who drank less than one cup of green tea a day, and deaths from cardiovascular disease were 26 percent lower for green tea drinkers than for those who didn't consume green tea1.
- Chinese studies indicate that men who drink at least one cup of green tea a day for six months have a reduced risk of free radicals developing in the colon, rectum, and pancreas. A Chinese study found that the risk of developing such a cancer was reduced by 60 percent in people who drank two to three cups of green tea a day.
- A general Japanese study into green tea and cancer found that men and women who drink up to 10 cups of green tea a day may run a lower risk of developing free radicals2.
Green Tea and the FDA
In spring 2005, the FDA (Food and Drug Administration) refused a petition from green tea companies requesting permission to put health claims on their products saying, "There is no credible evidence to support qualified health claims for green tea or green tea extract..."3.
Green Tea Q&A - Easy-to-understand Information
Q: Is green tea genuine tea?
Yes. Green tea comes from the same tea plant (Camellia sinensis) as black tea and oolong.
Q: What gives green tea its green color?
Green tea is green because it is not fermented, therefore no oxidation takes place.
Q: Why is green tea more nutritious than black tea?
Green tea retains more health benefits than black tea because the fermentation process used to make black teas causes the destruction of many nutrients.
Q: Is it true that green tea has more antioxidant qualities than other teas?
All teas contain potent antioxidants known as polyphenols, but green tea contains the most potent forms.
Q: Is it true that green tea fights free radicals?
It is true that green tea contains flavonoids which have been found to fight free radicals.
Q: Does green tea contain caffeine?
Yes. Green tea naturally contains caffeine.
Q: Are there side effects to drinking green tea?
Most green tea side effects have been linked to the caffeine it contains.
Q: Can I get green tea without caffeine?
There are green tea extracts in the marketplace that contain little to no caffeine.
Q: Can drinking green tea help me lose weight?
Some say the caffeine in green tea, along with the natural appetite suppressing qualities of green tea, may assist with weight control.
Q: I noticed green tea is contained in a lot of fat burners. Is that because of the caffeine in green tea?
Green tea extract is said to help with fat metabolism-and the same has been said about the caffeine in green tea. However, green tea extracts typically contain low levels of caffeine and do not increase heart rate.
View our entire listing of Green Tea products.
1 Saturday Evening Post. Jan-Feb 2007 v279 i1 p101.
2 Jane Pettigrew. Tea & Coffee Trade Journal. Oct 2006 v178 i10 p563.
3 HealthFacts. Nov 2006 v31 i11 p6. |
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More Recommended Green Tea Products
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