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TOO MUCH OR TOO LITTLE SLEEP TIED TO RISKY CHANGES IN THE BRAIN

Sleeping too much or too little is associated with changes in the brain that are known to precede and increase the risk of stroke and dementia later in life, a new study suggests. In one of the largest neuroimaging studies of its kind, researchers at Yale School of Medicine (YSM) examined the brain images of...

Too much or too little sleep bad for your brain
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Too much or too little sleep bad for your brain

by Steven Reinberg, Healthday, Reporter (HealthDay)—Everyone needs sleep, but too little or too much of it might contribute to declines in thinking, a new study suggests. Too little sleep was defined as four or fewer hours a night, while too much was deemed 10 or more hours a night. The ideal amount? Seven hours a night. “Cognitive...