Forget doing crossword puzzles, Sudoku, word search or reciting the alphabet backwards, one of the most powerful ways to protect yourself against dementia as you get older is by ensuring you get a good night’s sleep.We have known for some time that when we are in deep sleep, our body begins to do essential repairs, and fluid is released in our brains which helps wash out toxins that have been linked with Alzheimer’s disease.Last year, new research found that deep sleep is so important that even a small reduction can lead to a big increase in dementia risk. What makes this even more worrying is the fact that our sleep quality naturally tends to drop off with age.
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