How can the elderly prevent Alzheimer's disease by playing games?

　　As there is currently no effective cure for Alzheimer's disease, letting the elderly learn to have more entertainment and keep their brains flexible is the most ideal way to combat Alzheimer's disease. In addition to computer games, elderly You can also buy some educational toys, such as nine-ring rings, etc. If the elderly can play with them regularly, they can effectively prevent Alzheimer's disease.

　　Crossword puzzles, which are commonly found in newspapers, are also recommended for the elderly to play frequently. Answer the questions corresponding to the horizontal and vertical grids, take into account the existing words in the word grid, and fill in the words in the blanks to get the answer. Such a game requires players to have a certain amount of knowledge, and even flip through books and look up information to find an answer. In the process, the brain is fully activated.