Researchers from the University of Alberta (Canada) found in 2005 that for 90% of the population, keeping the brain sharp as we age can be as simple as being and staying mentally inquisitive.  The team found that people who are curious at a young age are more likely to be mentally active, and stay that way, as they age.  In addition,  people in their 70s and 80s who started incorporating activities to improve mental capacity at those ages could enjoy similar benefits to brain health.  Some of the best activities that keep the mind active and curious include: reading, traveling, memorizing poetry, playing card games, doing crossword puzzles, learning how to play a musical instrument, taking classes, and surfing the Internet.

"The mind is its own place, and in itself can make a heaven of hell, a hell of heaven." ~ John Milton