TRENTON, N.J. (AP) — While there's nothing you can do or take to ensure you won't get Alzheimer's disease, experts say there are some strategies that might help keep your brain sharp. And you don't need to dole out a lot of money to do it.

"Does one have to spend their life savings on computer games? I don't think so," said Dr. Yonas Geda, a psychiatrist at the Mayo Clinic in Scottsdale, Arizona, who's looked at some alternatives.

Research on the issue isn't conclusive, but there are hints that getting more exercise and stimulating your mind with games, computer use and other activities can he...