Italiamom- I am a 40 year old women, pregnant with #4 and suffering from untreated depression for 25-30 years that I can think of... and it was getting to serious crisis levels here recently. I did speak to my OB and recently began a treatment of Zoloft.
I was watching a show on TV, and I'm sorry I don't remember which it was- possibly "This Emotional Life" on PBS, or maybe one of the "Human Spark" ones with Alan Alda. Anyway- a point was made that shocked- horrified me and was one of the things that gave me the courage to get over my fear and prejudice of medicating depression- and to speak to my doctor.
The point made, graphicly, with brain imaging scan pictures... was that the hippocampus of depressed people is different than that of non-depressed people- AND the longer your depression goes untreated- the more damage is done to this brain structure... and apparently- treatment may reverse the ill effects.
I did a quick search just to get you started on what I'm talking about- but I have not researched this deeply and don't know what other info is out there. http://abcnews.go.com/Health/Depress...3885728&page=2