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The effect of black coffee
1, black coffee can stimulate the central nervous system, make people concentrate, think quickly, improve work efficiency and prevent Alzheimer's disease. Black coffee can effectively decompose fat, promote blood circulation, prevent the formation of coronary atherosclerosis and reduce the chance of stroke.

2. Caffeine in black coffee stimulates sympathetic nerve, promotes the secretion of digestive juice in gastrointestinal tract, has the functions of appetizing and promoting digestion, and can prevent gastroptosis and relieve abdominal distension. Caffeine can also stimulate gallbladder contraction and prevent gallstones.