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Depression is the leading cause of disability in the world; In the United States, about ten percent of adults have problems with the disease. But because it is a mental illness, it can be much harder to understand than, say, high cholesterol. Helen M. Farrell examines the symptoms and treatments of depression and offers some advice on how to help a friend who is suffering.
Lesson by Helen M. Farrell, animation by Artrake Studio.
Video credits to TED-Ed YouTube channel