What happens when we sleep? We dream. We recover. We plan. We rest. During this all important 'down time' our brains and our bodies are flushing out toxins and chemicals in a manner which is impossible while we are awake. This is one reason why people tend to feel lousy if they haven't gotten enough sleep. I can remember my mom insisting that I go to bed early the night before a big test in high school. I didn't appreciate it much then. Nowadays, I would kill for a nap or an early bedtime. George Bernard Shaw was right. "Youth is wasted on the young."
In a recent study at Johns Hopkins Bloomberg School of Public Health in Baltimore, scientists have made some fascinating discoveries regarding sleep and Alzheimer's. One of the brain's critical functions during sleep is to rid itself of toxic chemicals and proteins. One of these toxic proteins, Beta-Amyloid, is the protein which leads to the plaques and tangles of Alzheimer's disease. After studying 70 patients, scientists found that those who slept less or had lesser quality sleep had higher levels of beta-amyloid present in their brains.
Now begins the chicken and the egg conversation. Scientists are not sure whether poor quality sleep is an early indicator of Alzheimer's or whether those people with poor sleep habits are placing themselves at a greater risk of developing Alzheimer's disease. Those studies will almost certainly follow. For now, it should remind us all of the importance of getting a good night's rest.
http://www.dailymail.co.uk/health/article-2470255/Alzheimers-linked-poor-nights-sleep.html
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