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

By Robert Neely


Television shows and medical magazines have been marketing tea as a good supplement for weight loss. Because of the growing interest of tea, many people are concerned about the safety aspects of the supplement. A lot of the media promoting the advantages of tea are usually not explaining enough of the negative effects. Thoroughly knowing the possible negative effects is important to be able to take benefits without having unwanted consequences.

Just like many supplements or prescription drugs, the amount plays an important role with regards to negative effects. If consumed without care, even the most natural supplement may cause unexpected effects. Identical reasoning applies here. What exactly is the proper amount of tea?

Some of the most active contents of tea are caffeine and catechin. Both help with using body fat as the resource to create heat which is known as thermogenesis. This procedure in return boosts metabolism. Enhanced metabolic function burns body fat much faster in the human body.

There were countless scientific studies on caffeine and how it affects human body. Many health specialists are saying commonly above 500mg of caffeine a day is too much. It could be harmful resulting in unwanted effects such as insomnia, nervousness, restlessness, irritability, stomach upset, fast heartbeat and muscle tremors. Health experts furthermore agree that sensitivity to caffeine ranges by an individual, but 300mg or below is regarded a low risk dosage.

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.

Scientists carried out tests regarding dosage. A daily dose of 800mg of EGCG has been successfully tested without any unintended effects. A cup of green tea includes around 100mg of EGCG, so that is 8 cups of tea. A lot of laboratory experiments indicate more EGCG equals to greater weight loss, yet some health experts advise that large dose of one substance from herbs might be problematic. It is not easy to come to an absolute conclusion based on lab reports, still a lot of experts are claiming 300mg of EGCG is a good dosage to consume in a day. There have been successful lab tests with the amount of 300mg versus cancer cells and weight loss.

With the raising curiosity about green tea, even more tests will be conducted. In the meantime, 300mg seems to be a safe dosage for both caffeine and EGCG.




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