Trump shares video highlighting discredited theory linking vaccines to autism

 President Donald Trump on Monday posted a video to his social media account promoting the discredited theory that vaccines cause autism.

The decades-old video, in part, features David Geier, who Health Secretary Robert F. Kennedy Jr. tapped this spring to investigate links between vaccines and autism, alongside his father, Dr. Mark Geier, 

President Donald Trump listens as first lady Melania Trump repeats a question for him during a dinner in the State Dining Room of the White House, Thursday, Sept. 4, 2025, in Washington. (AP Photo/Alex Brandon)

whose medical license was suspended following claims he endangered children with autism. The anti-vaccine activists have published numerous studies on the topic and discuss some of their ideas in the video, which circulated around the internet Monday after Trump shared it.