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Potential effects of tea on health have been touted for infusions made from the plant Camellia sinensis for over 4700 years;
ever since its discovery was attributed to the legendary emperor, Shennong.
The Shen Nong Ben Cao Jing claimed its taste and stimulative properties were useful for treating tumors, abscesses, bladder ailments, lethargy, among other conditions.
The possible beneficial health effects of tea consumption have been suggested and supported by some studies, but others have found no beneficial effects.
The studies contrast other claims, including antinutritional effects such as preventing absorption of iron and protein, usually attributed to tannin.
The vast majority of studies have been of Green tea, however some studies have been made of the other types of tea derived from Camellia sinensis such as White tea, Oolong tea, and Black tea.
Green tea has been claimed to be helpful for atherosclerosis, LDL cholesterol, cancer, inflammatory bowel disease, diabetes, liver disease, weight loss, neurodegenerative diseases, and even halitosis.
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