The study found that the elderly who insist on drinking coffee are more energetic than their peers who don't drink coffee. Moreover, the cognitive decline of these elderly people who drink coffee is relatively small. Researchers believe that coffee has the function of activating cognition among the three most consumed beverages in the world. In addition, coffee can also enhance the antioxidant capacity of blood, provide protection and prevent free radicals from damaging the nervous system. Drinking three cups a day for the elderly can enhance memory and reduce the risk of Alzheimer's disease.

Precautions for the elderly to drink coffee: 1. Old people should not drink too much coffee. Strong coffee can make people's heart beat faster, causing premature beats, arrhythmia, excessive excitement, insomnia and so on. , thus affecting rest and restoring physical strength. Drinking coffee at night is even more inappropriate. 2. Elderly people with arteriosclerosis, hypertension and heart disease had better not drink coffee. 3. Old people with canker should not drink coffee. Because coffee can stimulate the secretion of gastric acid, and gastric acid will cause the aggravation of ulcer, leading to pain and bleeding. 4. Old people who often drink coffee should pay attention to calcium supplementation. According to the determination, drinking 2 cups of coffee will lose 15 mg of calcium. 5. Older people with drinking habits should not drink coffee after drinking. 6. Older people with diabetes should not put sugar in their coffee.

Old people need to remember not to drink coffee on an empty stomach, because coffee is more irritating to the stomach, especially for the elderly with gastrointestinal problems.