Insomnia: Caffeine can stimulate the central nervous system, leading to insomnia, difficulty falling asleep and other problems.
Cardiovascular diseases: Drinking high caffeine may increase the risk of cardiovascular diseases, such as hypertension, heart disease and stroke.
Dyspepsia: Caffeine can stimulate gastric acid secretion, leading to indigestion, gastric acid reflux and other problems.
Anxiety, palpitation and other uncomfortable reactions: Caffeine may cause anxiety, palpitation, headache, shaking hands and other uncomfortable reactions.
Impact on women: Drinking high caffeine may affect women's reproductive health, such as increasing the risk of infertility and abortion.
It should be noted that everyone has different tolerance and response to caffeine, and excessive drinking of coffee may increase the risk of the above hazards. Therefore, it is recommended to drink coffee in moderation, with no more than 400 milligrams of caffeine per day, which is equivalent to 4 cups of 8 ounces of coffee. For pregnant women, lactating women, heart patients, hypertensive patients and other special groups, they should drink according to the doctor's advice.