Drinking a few cups of tea every day may be good for your health.
Tea leaves come from the Camellia sinensis plant. They contain antioxidants that counter free radicals, which can damage cells. Antioxidants may reduce or help prevent some of this damage.
What's the difference between the main varieties of tea?
The difference between the three main varieties of tea (green, black, and oolong) is the process used to make them. Black tea is exposed to air, or fermented, which darkens the leaves and gives them flavor. Green tea is made by heating or quickly steaming the leaves. Oolong tea leaves are partially fermented.
Drinking a cup of tea every day is a sure way to reduce your risk of cancer.
There's no hard evidence that drinking tea can prevent cancer in people in general; many factors affect cancer risk. However, several studies have linked drinking tea to a lower risk of cancer for some people. More research is needed to define those groups.
Drinking green tea may help reduce the risk of heart disease by decreasing which of the following?
Some studies show that drinking green tea may help curb a few heart disease risk factors, including body weight, blood pressure, and cholesterol absorption. However, the FDA denied a petition filed by a green tea maker that wanted to put heart-health claims on its product's label, ruling that there wasn't credible scientific evidence to support the claims.
People who need to control their blood sugar level may benefit from drinking green tea.
There is some evidence that green tea may help control glucose (or blood sugar) levels; however, that hasn't been widely tested in people. More research is needed to learn how much green tea would be needed and whether green tea also helps curb body weight and body fat.
Freshly brewed tea has more antioxidants than…
You get the most antioxidants from freshly brewed tea; those compounds are reduced in instant tea, decaffeinated tea, and bottled tea. Researchers have not determined how many cups of freshly brewed green tea are recommended each day, but people in Asia typically drink at least three cups daily.
To bring out the antioxidants in the tea, you should let it steep for how many minutes?
Fresh brewing is the way to get the most antioxidants from your tea, so knowing how long to steep the tea is an important part of the process. Three to five minutes is the recommended amount of time for maximizing the benefits.
A glass of iced tea always contains the same general amount of antioxidants as a cup of hot tea.
False Iced tea often contains low to negligible amounts of catechins compared with the high concentrations found in a cup of hot tea, because adding water to brewed tea dilutes the concentration. However, iced tea and hot tea could contain approximately the same level of antioxidants if, when preparing iced tea, you use 50% more tea than when preparing a similar amount of hot tea, to allow for dilution. About 85% of the tea drunk in the U.S. is iced tea.
Which group of people should carefully monitor their consumption of green tea?
Green tea contains caffeine, so pregnant women or those who are breastfeeding shouldn't drink more than one or two servings of green tea per day, according to the Academy of Nutrition and Dietetics. People with irregular heartbeats or anxiety disorders also should be cautious about how much caffeine they get, from green tea or other sources.
Flavonoids are beneficial chemicals found in tea.
Flavonoids are a group of chemical compounds that are found in almost all fruits, vegetables, tea, cocoa, and wine. Their regular consumption is associated with reduced risk of a number of chronic diseases, including cancer, cardiovascular disease (CVD), and nerve disorders.
Images provided by:
University of Maryland Medical Center: "Green Tea."
Tea Association of the U.S.A.: "Tea Fact Sheet," "Glossary of Terms."
Shukla, Y. Asian Pacific Journal of Cancer Prevention, April-June 2007.
Yang, C. Environmental Health Perspectives, June 1997.
Shukla, S. Natural Product Research , May 2010.
Zeng, X. Journal of Cellular Biochemistry , July 2011.
Thielecke, F. Phytochemistry , January 2009.
Wolfram, S. Molecular Nutrition & Food Research , February 2006.
Hurrell, R. British Journal of Nutrition, April 1999.
Kao, Y. Molecular Nutrition & Food Research , February 2006.
Zijp, I. Critical Reviews in Food Science and Nutrition, September 2000.
American Dietetic Association: "Should I Give Up Caffeine Now That I Am Pregnant?"
National Cancer Institute: "Tea and Cancer Prevention: Strengths and Limits of the Evidence."
American Cancer Society: "Green Tea."
FDA: Qualified Health Claims: "Letter of Denial -- Green Tea and Reduced Risk of Cardiovascular Disease."
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