Everyone knows that there are many benefits of black tea. Drinking black tea can play a role in anti-inflammatory, sterilization, diuresis and detoxification, refreshing and eliminating fatigue, and clearing away heat and promoting fluid production in summer. In short, there are still many benefits. Relativity has always existed. Even black tea with many benefits will inevitably have disadvantages if you drink too much. As we all know, black tea is mild, which is not suitable for those who are prone to get angry. Excessive drinking for a long time will make the stomach cold and empty, and in severe cases will slow down the absorption of calcium in the body.