Green tea is a type of tea that is made from Camellia sinensis leaves and buds that have not undergone the same withering and oxidation process used to make oolong teas and black teas. Green tea originated in China, and since then its production and manufacture has spread to other countries in East Asia. Several varieties of green tea exist, which differ substantially based on the variety of C. sinensis used, growing conditions, horticultural methods, production processing, and time of harvest.
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Green Tea Dietary Supplements For Weight Loss

Although it has less caffeine than that of a cup of green tea, the herbal caffeine in a green tea dietary supplement appears to help the human body to burn fat more rapidly than usual. This is believed to speed up weight loss and aid the human body breaks down food more efficiently. That is not the only advantage of this supplement, however. Green tea also contains powerful antioxidants that can help prevent the oxidation of bad LDL cholesterol in the blood stream which can cause clogged arteries and heart disease. So, if you are concerned about your health and are looking for a natural way to improve it then a dietary supplement containing green tea may be just what you need. Antioxidants are good for our health. They neutralize harmful chemicals that attack our cells and tissues. We get these free radicals by exposure to pollution, cigarette smoke, air pollution and excessive sun exposure. It is thought that the antioxidants in green tea extract are able to neutralize the free radicals. They have been found to be particularly effective against a number of types of cancer as well. So, when you consider the health benefits of green tea extract, you may want to consider including it in your daily routine as a dietary supplement. Green tea extract has other health benefits. It appears to help slow down the aging process. It may also slow down cell aging and repair damage to tissues caused by free radicals. So, not only is green tea dietary supplements used as a weight loss aid, they are also thought to slow down the aging process, prevent disease and slow down the signs of aging. One of the problems with supplements in general is that not all of them are reviewed by scientists. Some manufacturers are less interested in publishing results that show their supplements to be effective. They are more interested in increasing their profits by using language that does not accurately convey the capabilities of their products. In one study published by researchers from the University of Pittsburgh, for instance, it was reported that green tea had a significant effect on reducing the liver damage caused by alcohol. But, when the same researchers tried to retract that study, they had to admit that the supplement was effective at reducing liver damage. Other studies have shown green tea extract has antioxidant effects on skin cells, hair and other bodily tissue. But, the amount of those antioxidants was small. In one study published by the American Society of Clinical Nutrition, it was reported that the antioxidant catechins reduced skin inflammation by up to 40% in older men. That is a very impressive result, but you would have to consume large amounts of the supplement to achieve that level of effect. Green tea also has anti-inflammatory and anti-carcinogenic properties and may prevent diabetic complications. The anti-carcinogenic activity is related to the catechins and polyphenols found in the tea. The blood sugar levels of people who drink green tea seem to be lower than those who do not. But, if the benefits of green tea can be applied to healthy people, then it may be effective in preventing diabetes and other problems. The green tea group could be useful in weight loss because it appears to inhibit fat absorption and increase the rate of fat metabolism. The decrease in hunger and increase in the number of calories eaten can help overweight people lose weight. But, the amount of calories needed to lose weight would have to be larger than those required by the participants in the placebo group to make the results meaningful. Another area where the green tea dietary supplements can be used is the prevention of cardiovascular disease. There is some evidence that they may reduce the risk of stroke and heart disease. The amount of antioxidants found in the tea can help prevent the oxidation of bad LDL cholesterol and promote the absorption of good HDL cholesterol. But, there is some evidence that green tea may have some detrimental effect in people with high blood pressure. More research is needed to verify these claims.