Tag: Mark Geier

Two men in white shirts and patterned ties sit side by side against a plain black background, looking toward the camera.

The Long Med Con: The Self-Styled Expertise and Expansive Invoices of Mark & David Geier

All it takes is a coming-of-age consultancy and you, too, can morph from an average teenage Joe or Josephine to an instant "vaccine expert"

/ June 12, 2025
A man wearing glasses and a suit, identified as Dr. Mark Geier, speaks into a microphone at a hearing. The C-SPAN2 logo appears on-screen, with “Geier” and “Genetic Consultants of Maryland” displayed. Several people sit in the background.

New book: Anti-vaxxers: How to Challenge a Misinformed Movement

This book is a handy compendium of everything worth knowing about the anti-vaccine movement and how to challenge the misinformation.

/ September 8, 2020

Chemical castration of autistic children leads to the downfall of Dr. Mark Geier

One of the most persistent myths is one that’s been particularly and doggedly resistant to evidence, science, clinical trials, epidemiology, and reason. It’s also a myth that I’ve been writing about a long time. Specifically, I’m referring to the now scientifically discredited myth that the mercury-containing thimerosal preservative that used to be in quite a few childhood vaccines causes autism. The myth...

/ May 9, 2011

Mercury in vaccines as a cause of autism and autism spectrum disorders (ASDs): A failed hypothesis

Mercury. It sounds very, very scary, particularly when you learn it was in some vaccines in the form of thimerosal. Fortunately, science tells us that thimerosal does not cause autism or neurologic injury, contrary to what antivaccinationists tell us.

/ January 7, 2008