Black coffee contains a lot of caffeine, with a refreshing effect, but women who drink black coffee every day may increase the chances of some diseases, anxiety, depression, a cup of black coffee a day women are prone to sweaty palms, irregular heart rate, tinnitus and other somatization symptoms, in addition, a cup of black coffee a day is also prone to, for example, anemia, osteoporosis, stomach discomfort, hypertension, kidney stones and gallstones 1, anemia: black coffee in the tannic acid will affect the absorption of iron, long-term consumption of black coffee will lead to insufficient absorption of iron in the body, easily triggered by iron deficiency anemia; 2, osteoporosis: because caffeine can be combined with free calcium in the body, and excreted through the urine, the less free calcium will cause the decomposition of bound calcium, resulting in osteoporosis; 3, stomach discomfort: because a large amount of caffeine will stimulate the stomach Mucosa, and increase the secretion of gastric acid, especially for women with stomach problems, more likely to lead to stomach discomfort, it is not recommended to drink black coffee for a long time; 4, hypertension: long-term consumption of black coffee, which large doses of caffeine will make the heart rate accelerated, irregular heart rhythm, which will lead to increased blood pressure; 5, kidney stones and gallstones: regular consumption of black coffee will increase the concentration of calcium, sodium, magnesium and citrate in the urine, which Increase the incidence of kidney stones, and freshly ground black coffee tends to stimulate the gallbladder to contract and secrete bile, which can easily induce gallstones. In addition, pregnant women and menstruating women are advised to avoid drinking black coffee, otherwise it will easily affect the normal development of the fetus and induce dysmenorrhea, for ordinary women, you can intermittently drink black coffee in moderation, but pay attention to avoid long-term intake.