Democratic White House hopeful and spiritual self-help guru Marianne Williamson gave credence to anti-vaccination theories in a 2012 radio show episode, telling her audience to “do your due diligence” before vaccinating their children.

In a January 2012 episode of her radio show, “Living Miraculously,” Williamson said she agonized as a mother over childhood vaccinations and told her listeners to “be awake” concerning the potential dangers of vaccines. In her conversation with author Gwen Olsen, a former pharmaceutical representative, Williamson claimed to have a friend whose child was diagnosed with autism after being vaccinated.