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DAVE ASPREY, founder of the supplement company Bulletproof and one of the many Silicon Valley tech titans obsessed with lengthening their life spans, famously declared he wants to live beyond 180 years. That sounds, frankly, exhausting. Yet who wouldn’t want to take a languorous sip from the gerontological cup, assuming reasonable health and fitness?
Therein lies the catch: A long life is something that’s desired and dreaded in equal measure. My uncle was a rocket scientist at NASA’s Marshall Space Flight Center in Huntsville, Alabama. When I visited him in his final years, I did not recognize this once-dynamic, brilliant man. He was confused, frail, vague. In 2014, Ezekiel Emanuel, a noted oncologist and chair of the Department of Medical Ethics and Health Policy at the University of Pennsylvania, wrote a blunt essay for The Atlantic titled “Why I Hope to Die at 75.” He argued that the “manic desperation to endlessly extend” life siphons resources and “robs us of our creativity and ability to contribute to work, society, the world.” Emanuel stands by it. “You don’t want to wait until the end of your life and live it unconsciously,” he told me recently.
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Experts say that genetics account for only 20 percent of “health span”—the rest is exercise and lifestyle. Black Scarf, 1996, by Alex Katz.
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