Actors Jim Carrey, center, Jenny McCarthy, right, accompanied by Carrey's daughter Jane, and others, holds up photos of Evan Asher, son of McCarthy, on Capitol Hill in Washington, Wednesday, June 4, 2008, during a rally calling for the elimination of toxins from children's vaccines. Jose Luis Magana/AP Photo

Who You Should (And Shouldn’t) Trust For Health Advice

Medical research can be nuanced, inconclusive or just plain tricky to explain clearly. University of Pennsylvania professor Paul Offit joins us to talk about how people with agendas often take scientific studies and twist the information to suit their needs. His new book is called “Bad Advice: Or Why Celebrities, Politicians, and Activists Aren’t Your Best Source of Health Information” (Columbia University Press).