Most of us want to stay healthy, active, and mentally sharp as long as possible. But there's a big problem for the would-be centenarian. The internet is awash with food faddism, anti-aging quackery, and contradictory scientific studies. Where can you go for reliable information about staying active and staving off dementia as long as possible? The Longevity Bible fills this gap. Written by a practicing internist and faculty member of Harvard Medical...