Perhaps we have become too inactive. Perhaps only the fittest, healthiest individuals made it into adulthood and therefore the population enjoyed long, healthy

Perhaps we have become too inactive. Perhaps only the fittest, healthiest individuals made it into adulthood and therefore the population enjoyed long, healthy lifespans. Perhaps our genomes have degraded without strong negative selective pressure against human ailments. But I doubt a new diet fad will be the elixir for longevity.