Read article - Quotes H. Gilbert Welch, professor of medicine and of the Dartmouth Institute for Health Policy and Clinical Practice, in an article about Geisinger Health System's new DNA screening program for patients. The article quotes comments by Welch previously published by NPR, where he acknowledges that some mutations may have actionable treatments, but others may not. "What are we really going to do differently for these patients?" asks Welch. "We should all be concerned about heart disease. We should all exercise; we should eat real food."