George Hirsch is 92. He has run 40 marathons. He helped create the five-borough New York City Marathon alongside Fred Lebow. He ran his fastest marathon at 44, came back from a hip fracture in his late 80s, and took up boxing at 90. He still trains nearly every day. I spend most of my clinical life looking at numbers: VO2 max, DEXA scans, lipid panels, grip strength. This conversation was a good reminder that the numbers describe healthspan. They don't create it.

Lowering cholesterol through lifestyle changes or medication reduces heart attack and stroke risk. Invest in your heart health today.

Rapamycin's role in longevity

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