There is no doubt that coffee contains caffeine, but pregnant women are pregnant with children, and coffee can easily lead to deformity or mental retardation of children, so pregnant women had better not drink so much coffee, so as not to affect the development of children;

A physically tired person

People who are in poor health due to work fatigue or fatigue, it is best to drink less coffee, because after physical fatigue, the work to be done is to rest, and coffee may make people rest not too fast, so reduce the amount of coffee to drink;

hypertensive

Hypertensive patients have hypertension themselves, and caffeine may cause people's blood pressure to rise. Therefore, patients with hypertension should minimize the use of coffee to avoid physical emergencies;

A person with indigestion

The digestive system is not a very healthy friend, so it is best not to drink too much coffee, because caffeine will increase the secretion of digestive juice, thus aggravating the influence or stimulation on the gastric mucosa and making the joke system unhealthy;

coronary heart patient

Coffee may aggravate coronary heart disease, so patients with coronary heart disease should not drink coffee;

Calcium deficient person

It has been proved that coffee can reduce calcium in human body. Therefore, people who lack calcium should stay away from coffee, which is not good for their health, especially middle-aged and elderly people, who have less calcium themselves. In addition, using coffee may lead to osteoporosis.