Dhruv Khullar in The New Yorker:
Ryan Crownholm, a middle-aged Army veteran with luminous green eyes and a strong jawline, likes to describe himself as a health hacker. He has written on LinkedIn that, after founding and running several construction-related companies, he started to think of his own body as a data source. During the pandemic, he attached a continuous glucose monitor to his skin, bought an Oura ring to monitor his sleep, and signed up for a healthy meal-delivery service. “I started tracking each of my data points,” he wrote. “I outsourced my diet.” Every few months, a pricey concierge doctor—“kind of my longevity guy,” he told me—sends his blood for comprehensive testing. To assess his bone health and body-fat composition, Crownholm gets regular dual-energy X-ray absorptiometry, or dexa, scans, which are normally recommended for older women at risk of osteoporosis. “Quantifying everything allowed me to be successful in business,” he told me. “I think it’s the same with health.”
One afternoon, while listening to a business podcast, Crownholm heard about a company called Prenuvo, which promises to help patients take control of their health. For twenty-five hundred dollars, Prenuvo will generate magnetic resonance imaging, or MRI, from your head to your ankles, and analyze the results for abnormalities.
More here.