With a new study on exercise which takes a moderate tone, I suppose we should be grateful for a more common-sense response to the fitness fanaticism of the 1980s (Part A, Nov. 3). It strikes me as odd, however, that no one seems to have noticed a paradox created by our obsession with longevity.
Many Americans pride themselves on their concern for the environment, and many would agree that world overpopulation is a major problem. But what if more people started living longer? It seems to me that few have considered the possibility that greater longevity may mean an even larger population increase over time.