Coffee is one of the three biggest drinks in the world who is taboo on coffee.

Coffee is one of the top three drinks in the world. Raw coffee contains nutrients such as sugar, protein and fat, and contains a small amount of trace elements and caffeine.

Some people rely on high levels of coffee to stimulate the brain for a long time, which may not be good. According to research, people drink high concentrations of coffee, adrenal gland in the body increased, resulting in increased heart rate, significantly increased blood pressure, and appear nervous, tinnitus and foot involuntary tremor and other abnormal phenomena. Therefore, drink coffee should not be too high concentration. Healthy adults should not consume more than 250 mg of caffeine per day, ie, drink 2-3 cups of coffee.

People suffering from hypertension, coronary heart disease, arteriosclerosis and other diseases: normal people drink coffee for a long time or a lot, which will increase cholesterol content in the body and cause cardiovascular disease, so people with cardiovascular disease obviously should not drink coffee.

Older women: Coffee can reduce the calcium the body needs, leading to osteoporosis. After menopause, women need 10 times more calcium per day than before menopause. If older women drink coffee regularly, fractures are likely to occur.

Patients with stomach problems: People with stomach problems should drink less or no coffee as much as possible, because drinking too much coffee can lead to deterioration of stomach problems.

Pregnant women: pregnant women drink too much coffee, can lead to fetal malformation or abortion.

Vitamin B1 deficiency: Vitamin B1 plays an important role in maintaining the balance and stability of the nervous system, while coffee has a great destructive effect on vitamin B1.

Cancer patients: Excessive drinking of coffee is carcinogenic to normal people, although the link between caffeine and cancer has not been confirmed, but for people who have cancer, it is better not to drink coffee.