6. Take care of your hearing.
Hearing loss makes it difficult to participate in conversations, which can lead to social isolation, depression and eventually dementia.
Hearing loss also reduces the stimulus to the brain itself. If your hearing loss has already started, you should try to improve your hearing through surgery or hearing aids.
7. Have an appropriate sleep pattern.
Lack of sleep, sleep disturbances are fatal to the brain. Sleeping too little or too much can more than double the risk of dementia. Therefore, you should sleep adequately about 7 hours a day, avoid drinking alcohol or using electronic devices before going to bed, and create a good sleeping environment.
Also, if you have sleep apnea, it needs to be treated promptly. Sleep apnea can put a strain on the blood vessels in the brain by dramatically reducing the amount of oxygen supplied to the brain.
8. Stay away from alcohol.
In terms of its effect on the brain alone, alcohol is more lethal than cigarettes. This is because alcohol directly affects the brain and damages nerve cells.
According to a large-scale study of Americans in their 60s, it was found that the degree of brain atrophy increased in the order of those who did not drink at all, those who drank little, those who drank a lot but stopped and those who drank a lot.
9. Do aerobic exercise at least 3 times a week.
Strength training is essential for the elderly. However, aerobic exercise is recommended rather than anaerobic exercise which interrupts breathing and provides a strong load.
When taking a walk, it is best to walk as fast as possible, with a wide stride and sweat a little so that you can have the effect of a strength training.
This way, you should be doing aerobic exercise 3 times a week for at least 30 minutes per session.
10. I also use my head while exercising.
If you train and use your head at the same time, you can expect a much better effect in preventing dementia. We recommend doing activities such as doing mental calculations while exercising, singing a song, or talking to someone you train with.
11. Have fun with social activities.
Social isolation tends to lead to degeneration of the body and mind. Social isolation is also closely related to depression, so to avoid falling into the vicious circle of social isolation → depression → dementia, it is recommended to participate in local community work, hobbies and activities even after retirement.
12. I like to play with people.
Having fun with games played against others, such as Go and chess, is excellent for preventing brain aging. Because it takes a lot of front lobe to read the opponent’s number. If you are immersed in the game, your motivation will increase due to winning or losing and you will be able to develop your social skills.
On the other hand, online or solo puzzles are simple tasks, so it is difficult to give enough stimulation to the brain.
13. Motivate.
Motivating life and increasing motivation are the most important points in the prevention of dementia. When motivation increases, emotions and intelligence also become active. 
