[m0zg]

I've read somewhere (but don't know if it's true) that prison meals are enriched with vitamins, and in particular with vitamin D. Could someone confirm?

Also, there are fewer old prisoners than old people in the general population.

[rwmurrayVT]

Personal experience tells me that it's most likely not true. I have seen a great deal of the food that we cooked in federal prison. I'd label the beverages like fruit juice being enriched as a "maybe".

We typically had lower quality of the same food stuffs you'd buy at the grocers. Protein/canned vegetables/"fresh" fruit/rice.