A thirteen year old having low bone density, heart problems and degenerating joints would be strange, but for someone > 70 it’s almost expected. The car example

A thirteen year old having low bone density, heart problems and degenerating joints would be strange, but for someone > 70 it’s almost expected. The car example is dumb because cars don’t have a built in mechanism for regeneration that is failing. Our bodies mechanisms for self-regeneration weaken and then we see all the symptoms of aging.