1 According to the statistics of researchers who are prone to infertility, women who drink 1 cup of coffee every day are more likely to suffer from infertility than women who don't drink coffee. Experts have investigated 104 women who have the habit of drinking coffee, and about 50 of them are difficult to conceive. Some fertility experts believe that this is a small-scale study and cannot finally confirm the special role of coffee in fertility. However, the researchers stressed that if the cause of infertility cannot be explained medically, it should be considered that infertility is related to caffeine. 2. Increasing the risk of myocardial infarction. Doctors from the School of Public Health of Boston University in the United States conducted a four-year study on 858 women who suffered from myocardial infarction for the first time at the age of 45-69 and 858 women who had never suffered from myocardial infarction. The results showed that drinking five or more cups of coffee a day could increase the risk of myocardial infarction for women by 70%, and the risk increased with the increase of coffee consumption. 3. It is easy to cause osteoporosis. Researchers at the University of California, USA, investigated 980 elderly women aged 50-98. The results showed that the bone mineral density of hip and spine of elderly women who drank more than 2 cups of coffee a day for a long time would decrease regardless of their age and obesity, and the degree of decrease was related to the duration of habit and the amount of drinking. Because caffeine can combine with free calcium in the human body and be excreted through urine. The decrease of free calcium will inevitably lead to the decomposition of bound calcium, which will lead to osteoporosis. 4. Drinking coffee for pregnant women is not good for the fetus. As early as the early 1980s, Dr. Colin of the US Food and Drug Administration found in the experiment that pregnant mice would give birth to deformed mice after feeding them the amount equivalent to adult drinking12 ~ 24 cups of espresso every day. To this end, the researchers warned pregnant women in the name of the US Food and Drug Administration that they should stop drinking coffee. 5. Pregnancy-induced hypertension syndrome (PIH) is a unique disease of pregnant women. Patients show edema, hypertension and proteinuria. If it is not prevented in time, it may endanger the safety of mother and fetus. According to an Australian study, drinking only a few cups of coffee a day will raise blood pressure. Therefore, pregnant women should not drink coffee. 6. It is easy to cause diabetes. Researchers in Finland and the United States found through investigation and analysis that these two countries are the countries that consume the most coffee. As a result, the number of people suffering from diabetes in these two countries is also the highest. Among them, Finnish coffee consumption ranks first in the world, and the country has the largest number of diabetic patients in the world. Other Nordic countries also consume a lot of coffee and suffer from diabetes. On the contrary, Japanese people consume the least amount of coffee in the world and have the least number of diabetics. Researchers believe that caffeine contained in coffee drinks can be precipitated into fetal tissues through the pancreas, especially the liver and brain of the fetus, which may make the baby suffer from diabetes after birth. In addition, drinking coffee can increase the risk of heart disease and hypertension for both men and women, and also lead to addiction. It can be seen that for the sake of eugenics, disease prevention and health care, women should not drink too much coffee for a long time. As for the benefit, it is refreshing and nothing else is good!