Fine coffee is healthy and not suitable for people who drink fine coffee.

1. Hypertension coffee contains caffeine, which can raise blood pressure in some sensitive patients.

2. If patients with renal failure have hyperkalemia, they need to cooperate with limited potassium diet, and the content of potassium in coffee is high.

3. Peptic ulcer caffeine stimulates gastric acid secretion, relaxes the smooth muscle vessels of the digestive system, accelerates food metabolism and reduces the nutritional value of food.

4. Diabetic caffeine can reduce insulin secretion in pancreas, reduce glucose tolerance, increase insulin excretion and increase blood sugar.

5. Epileptic caffeine can stimulate the brain power center, and xanthine can constrict blood vessels and reduce blood flow in the brain. It is very disadvantageous to patients with epilepsy.

6. heart disease coffee will increase the content of fat and triglycerides, increase the burden of the heart and the consumption of oxygen. Especially when the body is tired and excessive smoking is more likely to cause.

7. Iron deficiency anemia coffee will accelerate food metabolism and reduce iron absorption.

8. Kidney stones prevent recurrence of calcium oxalate stones by fasting foods rich in oxalic acid, and coffee is a food rich in oxalic acid.

9, insomnia long-term drinking coffee will affect the sedative effect, increase the number of waking times, so that the depth of sleep becomes shallow. In addition to the above patients can not drink coffee, healthy people may not be suitable for drinking coffee, such as pregnant women, breast-feeding women, athletes and other drinking will produce bad feelings or pathological phenomena.