Donald Trump has tapped Robert F. Kennedy Jr. to head the Department of Health and Human Services. It’s an appointment that has many public health experts more than a little concerned. 

For years Kennedy has spread misinformation about vaccines, calling into question their safety and efficacy. He has promoted controversial or debunked medical treatments. He has falsely linked antidepressants to school shootings. And he has accused the federal agencies he will oversee as having an interest in “mass poisoning the American public.” 

Dr. Céline Gounder is an infectious disease specialist, epidemiologist and currently the editor-at-large for public health at KFF Health News. She joins Diane to separate the facts from falsehoods and outline just how much power Kennedy might have over our healthcare system.