这是我今天收到的广告。似乎有些保留参考价值。红字告诉咱，吃的少，活得长。

The Youth Pill: Scientists at the Brink of an Anti-Aging Revolution
David Stipp

Reading this book won’t make you any younger, but you will learn a lot about getting old. The race to find today’s fountain of youth—which is a story of scientists, investors, pharmaceutical companies, and lab rats—is getting close to real results. For example, drugs that mimic caloric restriction have shown an increase of up to 50 percent in longevity. Stipp leaves you where the research is, “at the brink,” and wondering when an FDA-approved youth pill will finally arrive.