text:  Kaberlein is a biologist who co-founded a project to test the drug rapamycin in dogs. It's been shown to extend lifespan in lab animals, and he knew some longevity experts taking it experimentally. Though he was a bit skeptical it could help his shoulder, he decided to try it. It worked, and I'm not kidding you. Within 10 weeks, it was 95% range of motion back, and pain was completely gone, and it hasn't come back.