Few people know how to be old.
In Germany, the number of centenarians was over 4,000 in 1993. Today, that number has increased to an estimated 23,000. In the U.S., the 85 and-over group is the fastest growing segment of the population. It is becoming clear that aging is not necessarily equivalent to decay and decrepitude. Factors such as diet, nutrition, and exercise have been underestimated or ignored as potential moderators of the aging process.