Hey Radien,
I can relate. Since telling my parents I'm depressed a year ago I have on several occasions become very guilty and called them up to say, "Oh, it's that I have a chemical imbalance, or it's because I was very deficient in certain vitamins." I'm sure they realize they haven't been there in certain ways. I both love them and I have felt hurt and angered by the ways they haven't been there in my lifetime. It is hard now, but it will get easier. They can be good people, and well-intentioned and still mistakes may have been made. They have had their own issues. And you have a right to deal with yours. It is important to ask for help. In the long run it helps everyone involved. Good luck.