OverviewStudies show bouts of insomnia may predispose individuals to depressive illness. The correlation between sleep disorders and mood disorders holds true across age and gender lines.
Update Date 1/4/2016
Updated by: Timothy Rogge, MD, Medical Director, Family Medical Psychiatry Center, Kirkland, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.