Depression is Not Your Imagination It's an illnessMy thanks to Chris Check Out The Link
Depression isn't just one of those things you can just get over, exercise your way out of and it has nothing to do with self pity.
It is an illness. Yes, just like the flu or a cold even if you can't catch it from others. There are symptoms and a cause for depression. If you suffer with this illness you might wonder why or what causes this illness. The explanation is involved but it boils down to:
1. Chemicals in the brain
2. Hormonal changes in ones body
4. Medical problems
6. Life in general...