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dimanche 13 janvier 2013

Green Tea Side Effects - What Substances Are In Green Tea?

By Robert Neely


Health TV shows and magazines have been advertising green tea extract as an effective supplement for weight loss. With the increasing interest of tea, many are concerned about the safeness of the supplement. A majority of the media promoting the benefits of tea are usually not explaining enough of the side effects. Thoroughly knowing the potential negative effects is important to be able to take benefits without having harmful results.

Just like many dietary supplements or medicines, the amount has an important role with regards to negative effects. If consumed without care, even the most natural supplement triggers unexpected reactions. Same logic applies here. What exactly is the safe amount of tea?

An active ingredients of tea are caffeine and catechin. Both help with utilizing body fat as the source to produce energy which is known as thermogenesis. This process in return enhances metabolic rate. Increased metabolic process burns fat more rapidly in the human body.

Many analyses on caffeine and its effect on human body have been carried out. Many experts are claiming in general above 500mg of caffeine in a day is too much. It can be harmful resulting in side effects which include insomnia, nervousness, restlessness, irritability, stomach upset, fast heartbeat and muscle tremors. Health specialists furthermore agree that sensitivity to caffeine ranges by an individual, however 300mg or below is regarded as a good amount.

One cup of tea possesses roughly 20mg of caffeine. Compare to coffee, it is not a lot. One cup of coffee possesses roughly 100mg of caffeine. If tea is the only caffeinated drink consumed then it should not be a concern. But when other caffeinated drinks are consumed during the day, then it is important to look at the entire daily dosage of caffeine.

Industry experts carried out tests regarding dosage. A daily amount of 800mg of EGCG has been tested with success and with no unwanted effects. A cup of green tea comes with around 100mg of EGCG, which is about 8 cups of green tea. A lot of lab experiments claim more EGCG equals to greater fat reduction, but some professionals advise that large amount of one substance from herbs could be a problem. It is not easy to make a definite conclusion based on lab studies, but a lot of medical experts are saying 300mg of EGCG is an ideal dose to take on a daily basis. There are successful scientific tests with the amount of 300mg against cancer cells and weight reduction.

Due to the growing interest in green tea, even more laboratory tests will be conducted. For now, 300mg seems to be a safe dosage for both caffeine and EGCG.




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