food/vitamins loosing nutrients

I might be wording it wrong.

I'm not a science person,if it takes symbols or more than a few sentences,its usually over my head.I remember that matter(or energy?) is neither created or destroyed,but only converted.

So if a bottle of vitamins(or food)looses its effectiveness/nutrition over time..where does it go?

My only guess there is some type of chemical process that changes it into something else,not sure what it changes into?

Let's block ads! (Why?)

food/vitamins loosing nutrients