Originally Posted by Austin
Here is an article on the latest research on depression.

They are at the point that they have isolated the physical cause and are looking at specific treatments.

Short synopsis - its cause by brain cell death.

http://www.boston.com/bostonglobe/ideas/articles/2008/07/06/head_fake/

Very interesting. I definitely experienced this:

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In fact, many scientists are now paying increased attention to the frequently neglected symptoms of people suffering from depression, which include problems with learning and memory and sensory deficits for smell and taste.