Studies have shown that "mental aerobics", such as solving crossword puzzles, are an important part of a healthy lifestyle and can minimize the risk of developing neurodegenerative diseases, such as Alzheimer's. Though any intellectually stimulating activity can help prevent brain disease, crossword puzzles, which require daily, sustained bursts of cognitive effort, are particularly effective in helping prevent memory loss. I'm sure that puzzlers have long suspected this to be the case but now we have confirmation from credible sources. So, the next time someone pooh-poohs your penchant for puzzles, just point them to these articles.

• Brain exercise wards off Alzheimer's
• Brain Workout Benefits
• Longevity and Mental Fitness

Want to give your brain a workout? Here are some free puzzles for you to enjoy. No prescription required.

• Crossword Puzzles
• Themed Crosswords
• Easy Crosswords

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