Are there any downsides to green tea consumption?

[Alex]

In a study of tea drinking in China, it was found that drinking tea at high temperature increased the risk of esophageal cancer by 2 to 3-fold. In a study in Iran, drinking very hot tea increased esophageal cancer by 8-fold; compared with drinking the tea 4 or more minutes after pouring, drinking the tea after only 2-3 minutes increased the risk about 2.5–fold, and less than two minutes by 5-fold. Steeping tea for 5 minutes maximizes the release of antioxidants. Therefore waiting for 5 minutes after the tea bag is placed in boiling water will avoid the risk while maximizing the benefits.