POSTED: Friday, July 31, 2009 - 8:52am
UPDATED: Thursday, February 25, 2010 - 12:32pm
A new study from the University of Alabama at Birmingham found a lack of sunlight is associated with cognitive decline among people suffering from depression.
Researchers used weather data from NASA satellites to truck sunlight exposure across the U.S. and then compared it with information on cognitive impairment in depressed people. The study linked low level of sunshine with lower short-term recall and other brain functions. Researchers say light has been shown to affect brain blood flow.