Aging researcher Coleen Murphy: “All the doctors in the longevity field are taking metformin” The Princeton researcher has published a book in which she reviews what is known about the science of longevity and sets the goal of increasing the years lived healthily. Murphy became interested in these worms when she learned of the work of Cynthia Kenyon, who discovered how a single genetic mutation, in the daf-2 gene, doubled the lifespan of C.

elegans. The FDA [the body that regulates drug approval in the US] does not consider aging a disease.