Black coffee is not add any modification of coffee, with fragrant sweet alcohol acid bitter five flavors, can diuretic, promote cardiovascular circulation, refreshing, appetizing, relieve fatigue, make people happy mood, etc. At the same time, the caffeine in coffee can help consume calories, but women drink black coffee for a long time will lead to: 1, poor sleep: coffee can refresh the brain, but long-term drinking will affect the quality of sleep; 2, bone Loss: coffee has a diuretic effect, long-term drinking a lot of coffee will cause bone loss, thus increasing the chances of osteoporosis; 3, make people excited: coffee can stimulate the central nervous system, making the mind more awake, but long-term drinking will make people in a continuous state of excitement, may appear hypersensitivity, palpitations, tinnitus, sweaty palms and other symptoms; 4, gastrointestinal disorders: coffee can stimulate the gastrointestinal secretion of stomach acid, long-term drinking coffee Easily lead to gastritis, gastric ulcers and other diseases or aggravate the disease; 5, vascular sclerosis: coffee contains a lot of caffeine, can raise blood lipids, long-term coffee will cause vascular sclerosis, reducing the elasticity of blood vessels. Therefore, it is not recommended to drink coffee for a long time, a balanced diet, and develop good living and eating habits.