Man-Made Epidemic of Peanut Allergies?

More Americans have peanut allergies today than at any point in history. Dr. Marty Makary, the author of “Blind Spots: When Medicine Gets It Wrong, and What It Means for Our Health,” and PragerU CEO Marissa Streit discuss how medical “experts” got the science perfectly backward so that the U.S. now leads the world in peanut allergies.