Any good books on depression?

[Guest guest]

I have a family member that is suffering from depression and fatigue and I want

to help him with bio medical treatments, mainly reducing pathogens and reducing

inflammation. I have many books on more complex illnesses, but none on the

lesser symptoms, like depression. It is too much of a stretch for this person

to understand that all illness is related and has similar root causatives. Is

anyone aware of a book that would make this clear or otherwise would focus on

pain and depression? I want to reach him without scaring him with my witch

doctoring. LOL!

Thanks.

Caryn