A new study suggests that depression often accompanies cognitive impairment but does not precede it.
"Traditionally, cognitive complaints and impairment in the presence of depression has been considered to be caused by the depression. Our study suggests that depression is not a cause of dementia but accompanies the onset of cognitive impairment," José Alejandro Luchsinger, MD, MPH, associate professor of medicine and epidemiology, Columbia University Medical Center, New York City, told Medscape Medical News.
The study was published online December 31, 2012 inArchives of Neurology.
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