From a biological level, severe depression and dementia in older adults look remarkably similar, psychiatrists have found. A new brain scan technique can pinpoint where protein deposits are accumulating.

Stress seems to be a regular experience in today's fast-paced world, while depression affects 15 million of us. The two often go hand-in-hand.

Family members who care for patients suffering from dementia are frequently under stress and are more at risk of suffering from depression. A specialized type of psychotherapy may help.

Diabetes can lead to a variety of complications, including kidney disease, foot amputations, and eye problems. Even the brain can be affected by diabetes.

Light therapy, classically referred to as heliotherapy, has been used for years to treat seasonal affective disorder. Originally it was believed that the eyes were the only source of photosensitivity.

When kids have a father who is depressed, they are far more likely to experience their own emotional or behavioral problems. Paternal mental health problems have a significant effect upon children, research shows.

For people behind on their mortgage payments or going through foreclosure, there are high rates of depression.

About 11 percent of Americans aged 12 and over take antidepressant medications. Yet only about one-third of severely depressed people are on such medication.

Boosting your own self-esteem is generally thought of as a good thing, but apparently it can be too much of a good thing.

Some amount of angst, anxiety and occasional depression seems normal for most teenagers. However, up to 59 percent of depressed teens suffer from anhedonia, or the inability to experience pleasure.