Why do discs herniate?

[Pattygo]

Why do discs herniate?
It seems like a pretty simple and straight forward question, but when the herniation of the disc, is not caused by any sort of trauma, your lifestyle is pretty normal - and by that I mean, I`m not a football player, I`m not a stuntman/woman, I`m not a ballet dancer, etc. I don`t have disc compressions at any level, I don`t have scoliosis or lordosis, what is the cause for a disc to herniate??
The answer I`m getting is usually "GENETIC".....translate....I have no IDEA!!!
Apparently, but for what I read hasn`t been proven yet, in some individuals, the gel material that makes the discs, doesn`t have the proper "density" and that`s why it moves.
Some other doctors told me that the problem, in some individuals, is the membrane that surrounds the discs that - for whatever reason- tends to be too soft, letting the disc come out, or too little flexible, with tendency to lacerate, and let the disc out.
I cannot believe that I can`t find any more specific answers about this problem or find a way to make my disc more healthier or the membrane around the discs stronger. Has any of you heard of any remedy, even with alternative medicine? Any supplement or vitamin that can improve the "quality" of discs?
Any study that I can read or Dr. that I can talk too?

Sorry for my frustration......

I have 4 herniated discs in my neck, 4 in my thoracic, and I haven`t even look at my lumbar yet, but not apparent reason for all this to happen.

Thanks all for your help

Patty