Coffee spoilage Coffee can only be harmful if overdose is taken, and therefore there will be a range of damages, most notably: lack of fertility and thus the ability to reproduce. In the case of frequent intake of pregnant women, this may lead to miscarriage or congenital malformations. Having coffee on your stomach before breakfast gives you a greater chance of getting type 2 diabetes. It works to reduce the absorption of the iron component of the food, thus not benefiting from it. Psychological and neurological disorders such as excessive stress. High blood pressure and cholesterol level
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From @liza12