What do you think?
Rate this book


229 pages, Hardcover
First published January 1, 2010
The researchers looked at the records of 1,449 randomly selected men and women when they were fifty-one and then again when they were seventy-two and found that midlife obesity, like high blood pressure and high cholesterol, doubled the risk for dementia — and that those who had all three risk factors were six times as likely to become demented. (p. 168)So the scientists involved agree that lifestyle factors will be important — but which ones, why and how? That is still being vigorously debated, although based on Strauch’s interviews, it seems like the researchers themselves are eating plenty of blueberries (“brainberries!”) and other antioxidant-rich foods, and exercising like crazy.
Stanford University economist John B. Shoven recently came up with an entirely new way of calculating when we reach the crest of that hill. Given the fact that we’re all in better shape and living longer, he argues that our true age should be determined not by years since birth but by years left to live. In this way, he has reconfigured the traditional arc of our lives to create a long period of youth followed by shorter periods of middle age and old age. That means that if you have less than a 1 percent risk of dying within a year you can consider yourself young, and you’re not old until you have a 4 percent chance of dying within a year.Of course, with the obesity epidemic showing no signs of reversing, it is questionable whether we actually all are in better shape, but this at least gives us another incentive to stay out of that doomed demographic.
Middle age, according to this marvelous system, would be defined be a mortality risk between 1 and 4, a span of time that, by Shoven’s analysis of 2000 U.S. Census data, now begins for men around age fifty-eight and for women at age sixty-three.