1. Prevention of Alzheimer's disease According to scientific research, middle-aged and elderly people think more with their brains, which is helpful to delay brain aging and greatly reduce the probability of dementia in the elderly. Playing mahjong requires memorizing cards, which effectively exercises the memory of the elderly. In addition, playing mahjong requires counting cards. While counting cards, the old man's thinking ability has also been developed. So it can be said that playing mahjong can stimulate the brain activity of the elderly.

2. Exercise hand strength In the process of playing mahjong, shuffling, grasping cards, building cards and other actions require the cooperation of the upper body's shoulders, arms and fingers, so the upper body of the elderly has been exercised in this process. Playing mahjong can help some elderly people with upper limb dyskinesia to exercise their bones and muscles, especially their hands. 3. Promoting communication Playing mahjong can promote communication between people.

3. You can make friends. Mahjong table is the best communication platform. Some elderly people who are idle and lonely after retirement can make friends at the mahjong table. Playing mahjong with a few friends every day, talking and laughing while playing mahjong, is helpful for the elderly to relieve loneliness and is conducive to mental and spiritual health.

What are the disadvantages of playing mahjong? 1. You must sit at the table to play mahjong. If you don't exercise for a long time, you will get fat easily and have problems with your spine. There are many problems after getting fat, especially bad for the heart.

Playing mahjong doesn't always win. After losing, I must be in a bad mood and love to lose my temper. The more you lose, the more you want to win back. The greater the pressure, the more you lose, forming a vicious circle. Playing mahjong is always accompanied by smoking and staying up late. Staying up late in a smoky and bad air environment has a great influence on people's spirit and physiology.

I play mahjong most of my free time every day. There is little time to communicate with family and do housework. In the long run, it will inevitably lead to strong problems within the family. Playing mahjong will be noisy and will disturb the people at night.