Add Yahoo as a preferred source to see more of our stories on Google. A diagnosis of treatment-resistant depression can lead to a sense of hopelessness and despair in some patients. Maria ...

Scientists have long wondered whether depression leads to less sleep or whether a lack of sleep triggers depression. A new study suggests it's the latter: Getting less than five hours of sleep a night ...

Children who experience persistent sleep issues throughout their younger years may have a greater risk of developing depression in adolescence, a new study suggests. Led by Dr. Isabel Morales-Muñoz at ...

More than two million Americans age 65 and older suffer from depression, but research says almost 80 percent don't receive adequate help for this serious, but treatable disorder. Seniors tend to ...