How much coffee you drink depends on your physique.

There are many theories about drinking coffee: drinking a cup of instant coffee (about 2-3 teaspoons) in healthy people can lead to tachycardia. If you drink at night, it will cause insomnia. For people with some kind of cardiovascular disease, there will also be a high blood pressure phenomenon, people with gastric and duodenal ulcers drinking coffee, will increase gastric acid, stimulate gastric mucosa and ulcer surface, harmful to wound healing, and so on. So, when is the best time to drink coffee?

Coffee and Cancer French researchers have found that coffee drinkers will greatly increase the incidence of pancreatic cancer. According to their survey, people who drank up to 60,000 cups of coffee were twice as dangerous as those who did not drink coffee. Cancer Research in Greece? Cough? in 1981, it was found that women who drank coffee had a twice higher incidence of ovarian cancer than women who did not drink coffee. Drinking coffee can also lead to breast cysts in women. Although breast cysts are different from cancer, they can also turn into cancer. It is reported that women with cysts are four times more likely to develop breast cancer than normal women. Coffee and premenstrual syndrome refers to a series of abnormal symptoms of women before menstruation, such as emotional instability, mental tension, irritability, anxiety, lack of concentration, insomnia, headache, breast pain and so on.

According to a recent report in the American Journal of Public Health, women who drink caffeinated drinks are prone to premenstrual syndrome.

After 19 to 35 years of follow-up, it was found that people who drank five or more cups of coffee a day were 2.8 times more likely to suffer from coronary heart disease than those who did not drink coffee. if other possible causes of coronary heart disease (such as age, smoking, high blood pressure, serum cholesterol concentration, etc.) are excluded, the relative risk is as high as 2.49 times.