Rather than focusing solely on the etiology of individual diseases like heart disease, cancer, Alzheimer’s and arthritis—or, for that matter, COVID-19—geroscientists are trying to understand how these diseases relate to the single largest risk factor of all: human aging. Their goal is to hack the process of aging itself and, in the process, delay or stave off the onset of many of the diseases most associated with growing old.

The idea that aging and illness go hand and hand is, of course, nothing new. What’s new is the newfound confidence of scientists that “aging” can be measured, reverse-engineered and controlled.

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