Benefits of tea seem to continue growing as studies being conducted on the natural substance increase
San Francisco, CA -- (SBWIRE) -- 10/05/2012 -- Leading nutritional scientists convened at the United States Department of Agriculture to present the latest research, which supports the role of tea in promoting neurological and physiological health.
The meeting chair, Jeffrey Blumberg, who is currently a professor at the Friedman School of Nutrition Science and Policy and the Director at the USDA Human Nutrition Research Center on Aging at Tufts University, stated: “There is now an overwhelming body of research from around the world indicating that drinking tea can enhance human health.” He added, “The many bioactive compounds in tea appear to impact virtually every cell in the body to help improve health outcomes, which is why the consensus emerging from this symposium is that drinking at least a cup of green, black, white or oolong tea a day can contribute significantly to the promotion of public health.”
New research presented by Dr. Claudio Ferri of the University L’Aquila, Italy, found that in 19 normotensive and 19 hypertensive individuals, black tea helped reduce blood pressure.
Another research on tea catechins suggests that tea may provide benefits in maintaining body weight or promoting weight loss. In this comprehensive review, researchers from Maastricht University (Netherlands) found that 24-hour energy expenditure and fat oxidation increased when subjects consumed green tea and caffeine. These results suggest that the increase in caloric expenditure is equal to about 100 calories over a 24-hour period, or 0.13 calories per mg catechins.
In a related review, researchers concluded that subjects who regularly consumed green tea and caffeine lost an average of 2.9 pounds within 12 weeks, while adhering to their regular diet.
A six-month clinical trial conducted by the Texas Tech University Health Sciences Center showed that 500 mg of green tea extract (equivalent to 4-6 cups of green tea daily) alone or in combination with Tai Chi improved markers for bone formation, reduced markers of inflammation and increased muscle strength in the study participants, who were 150 postmenopausal women with low bone mass.
In a placebo-controlled study involving task performance and alertness conducted by Unilever R ‘n’ D, Vlaardingen of the Netherlands, subjects drinking black tea were more accurate on attention tasks and also felt more alert than subjects drinking a placebo.This latest study, amongst others, support earlier research on the mental benefits of tea and provides a broader perspective on tea’s effects on psychological well-being. Each of these studies provide support, then, for tea’s benefits for mental sharpness, as measured by attention, mood and performance.
As the symposium presenter, Suzanne Einother of Unilever R‘n’ D, Vlaardingen, summarized: “In our study with adult subjects, we found drinking tea improved attention and allowed individuals to be more focused on the task at hand. These effects were found for two to three cups of tea consumed within a time period of up to 90 minutes.”
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