green tea is a very good antioxidant and its benefits are known worldwide now . black tea is similar as well. a serious disease can be helped by drinking these teas, and the name of it is called haemochromatosis, it is caused by excess iron in the body? too much iron causes damage and disease? as the build up of iron causes tissue to become toxic. there are limited ways to get rid of iron but tannins in the tea draw it from the body to be secreted away. those suffering from anaemia would benefit from drinking less tea without milk and sugar.