The watchdog's reporting comes in the wake of several high-profile deaths in federal lockups in recent years, most notably the murder James "Whitey" Bulger and the suicide of Jeffrey Epstein.
The inspector general's office found inmates served moldy bread, containers of food covered by what appear to be rodent droppings and insects in bags of cereal.
Disgraced Theranos CEO Elizabeth Holmes' sentence hasn't changed, but like all prisoners who follow the rules, she can qualify for early release under the federal government's "good time" guidelines.