Disadvantages

however, does not go to say that the stronger the tea, the more advantages it will yield. Too much tannic acid will affect the secretion of the gastric juice, irritate the membrane of the stomach and cause indigestion or constipation. Strong tea taken just before bedtime will give rise to occasional insomnia. Constant drinking of over-strong tea may induce heart and blood-pressure disorders in some people, reduce the milk of a breast-feeding mother, and put a brown color on the teeth of young people. But it is not difficult to ward off these undesirable effects: just don't make your tea too strong.