We study biological aging of elderly U.S. Americans born 1904-1966. We use thirteen waves of the Health and Retirement Study and construct a health deficit index as the number of health deficits present in a person measured relative to the number of potential deficits. We find that, on average,...

We study biological aging of elderly U.S. Americans born 1904-1966. We use thirteen waves of the Health and Retirement Study and construct a health deficit index as the number of health deficits present in a person measured relative to the number of potential deficits. We find that, on...