"For the first time it is abundantly clear that aging in mammals can be slowed down, " says University of Michigan gerontologist Richard Miller.

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Demko, the Florida Atlantic gerontologist, says boomers are "rule-breaking nontraditionalists" who succeed in making their new ideas traditional in less than a generation.

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Steven Austad, a gerontologist based at the University of Texas, warns that such therapies are many years away and may never arrive at all.

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Austad referenced a very small study of 10 patients by Valter Longo, a gerontologist at USC, in which patients who cut back their calorie intake before getting chemotherapy had fewer side effects.

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"The promise of technology has actually broken down geographic barriers, " says David Demko , a gerontologist and professor at Florida Atlantic University who coined the term "zoomers" for affluent boomers who stay active well into old age.

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This worries Dr. Kathy Brenneman, a gerontologist.

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