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Green Tea: Health Articles
D
atabase - Green tea research has shown it has an effect on variety of health conditions. The ability to lower blood sugar, chelate iron and control the production of nitric oxide are all especially
important. This ancient beverage seems custom-made to protect health and delay aging. To find how green tea benefits different organs and conditions click a specific topic from our article database below:

Diabetes: General


Date: 01-01-2010
Green tea has been used traditionally to control blood sugar in the body. Animal studies suggest that green tea may help prevent the development of type 1 diabetes and slow the progression once it has developed. People with type 1 diabetes produce little or no insulin, a hormone that converts glucose (sugar), starches, and other foods into energy needed for daily life. Green tea may help regulate glucose in the body. A few small clinical studies have found that daily supplementation of the diet with green tea extract powder lowered the hemoglobin A1c level in individuals with borderline diabetes.



Coffee, green tea reduce diabetes risk: Study


Date: 11-09-2009
Drinking caffeineated green tea and coffee could protect women and overweight men from type 2 (non-insulin dependent) diabetes. Researchers from Japan analysed 17,413 men and women aged 40 to 65 years, who were free of diabetes at baseline. New cases of diabetes occurred in 231 men and 213 women over a 5-year follow up period, Health News reported. Those who reported drinking six or more cups of green tea per day were 33 percent less likely to develop type 2 as compared to subjects who did not consume tea. Those who reported drinking three or more cups of coffee per day were 42 percent less likely to develop the condition than non-coffee drinkers. Drinking black Chinese tea did not appear to protect against type 2 diabetes. The apparent protection was most pronounced in women and overweight men at higher risk for insulin resistance, a precursor to diabetes. These findings from a Japanese population resemble results obtained in European and US populations in which people who drank seven or more cups of coffee per day had a 29 to 52 per cent reduced risk of diabetes as compared to those who drank fewer cups of coffee per day or none at all.



Anti-Diabetic Properties of Green Tea


Date: 01-01-2003
The ability to significantly lower blood glucose has been confirmed also in studies using diabetic rats. Both green and black tea possess anti-diabetic activity, and are effective in the prevention and treatment of diabetes. The fact that aged rats responded so dramatically to these polyphenols implies that it is possible to reverse the age-related rise in glucose intolerance and the resulting degenerative cascade of atherosclerosis and other degenerative disorders.

In what way are tea polyphenols able to lower serum glucose? The main mechanism seems to be the inhibition of the activity of starch digesting enzyme amylase. Tea inhibits both salivary and intestinal amylase, so that starch is broken down more slowly, and the rise in serum glucose is thus minimized. In addition, according to one recent study, tea may reduce the intestinal absorption of glucose.

A relatively little known compound found in onions and in tea, especially green tea, called diphenylamine, seems to have a strong sugar-lowering action. Again, the lesson here is that we are barely beginning to identify the significant phenolic compounds and their interactions; it's best not to rely on a single ingredient such as epigallocatechin gallate, but rather to ingest the whole complex set of bioactive compounds present in tea for best results.

Thanks to the serum glucose-lowering effect of tea, we thus obtain significant anti-aging benefits of calorie restriction, reduced glycation, and lower insulin secretion. If you drink tea with a carbohydrate-rich meal, you slow down the release of glucose and reduce its absorption (you also reduce the absorption of iron, another anti-aging benefit). Thus, you prevent the harmful spiking of insulin. Since insulin is our most fattening hormone and, with cortisol, our most pro-aging hormone, you also derive the substantial range of benefits that go with calorie restriction and insulin control.

Diabetics show premature aging and poor immune function due to the high oxidative stress that results from high serum glucose. When type-II diabetics were put on a diet that included 6 cups of tea a day plus some tomato sauce with onions, oxidative damage to the DNA of their lymphocytes was found to be markedly reduced. We already know that carotenoids can protect DNA; it is possible that compounds found in green tea may also be able to protect DNA, especially in synergistic action with other antioxidants.

Green tea has been used traditionally to control blood sugar in the body. Animal studies suggest that green tea may help prevent the development of type 1 diabetes and slow the progression once it has developed. People with type 1 diabetes produce little or no insulin, a hormone that converts glucose (sugar), starches, and other foods into energy needed for daily life. Green tea may help regulate glucose in the body.



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