This loss of interest often causes problems with sleeping and eating. Brief periods of depressed mood are normal.

Depression can occur as early as childhood. The most common ages for depression are from 30 to 50. But symptoms of the disease can occur at any age. They should be treated by a healthcare provider.

Put them off until your depression lifts.

Get help if you have any of these problems for more than 2 weeks.

Ask what is wrong if someone seems depressed. Be a good listener. It may help the person figure out what started the depression.

Instead of trying to solve their problems, do active listening. Acknowledge what they are saying without judging. Encourage them to talk about things they enjoy. Let them know they are important to you.

Vitamin B-12 and other B vitamins help the brain produce chemicals that affect mood. Low levels of vitamin B-12 and other B vitamins may be linked to depression, but more research is needed. Tell your healthcare provider about all supplements you are taking. Talk with your provider about the role of good nutrition and depression.

Severe mental illness has a large impact on the U.S. It costs more than $193 billion a year in lost earnings.