How does growing old work for the elderly? Are there nursing homes for criminals?

Well, their bodies, organs, bones, muscles, brains and nervous systems, immune systems all start to wear out. It's like a machine that gets less functional with age. If you are referring to brain diseases like dementia and Alzheimer's, the brain begins to become degraded (I won't go into how now), and the person loses thinking and memory abilities. When the disease progresses far enough, the person requires a caregiver as the patient can't take care of himself or herself. If you want more detail on dementia, go to larrywiley3344.com. As regards criminals, if he/she has paid their debt to society and been released, there's no reason they couldn't go into a regular nursing home. Individual nursing homes may differ in their rules. If the person is still in prison, check with the prison.