How Not To Look Old

How Not To Look Old: "The Guyuron team's most interesting findings had to do with weight. Many of the twin pairs were of similar weight, but differences in how old they looked began to appear when one had a body mass index (BMI) at least four points higher than her sister. For twin pairs under 40, the heavier one looked significantly older. But surprisingly, after 40, that same four-point difference in BMI made the heavier twin look significantly younger. (Read 'Aging Gracefully'.)"