Don't count on vitamins for better sleep
from The New York Times
There are many causes of insomnia in older people, most of them related to some kind of illness, and B12 deficiency can have many neurological consequences. But scientific studies focusing on that nutrient and sleep in the elderly are lacking. Insomnia is known to increase in older people, with prevalence rates as high as 65 percent, depending on the criteria used, according to a review of 50 studies of insomnia in general.
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