Most people want to live to an old age. But few want to be old. Because age means decay, limitations, disease. But does it have to be this way? Or can we grow very old and still retain good health? "The first person who'll turn 150 years old has probably already been born," say some scientists - and they should know. Because they're tackling the root cause of the problem: not age-related illness, but the aging process itself. But what's the secret of long life without aging biologically to the same extent? In telomeres, the ends of chromosomes, which are longer in Costa Rica centenarians than in other people? Is it enough to zap what are known as "zombie" cells, present in all of us? At least scientists are now able to measure our biological age regardless of our actual age in years. An invention by one of the gurus of longevity research Steve Horvath has made that possible.
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