President Trump used his Truth Social platform today to shine a light on a long-standing controversy in vaccine safety, posting a video that exposes the truth about the use of thimerosal, a mercury-based preservative.
The clip featured physicians Mark and David Geier, who present evidence that thimerosal is a “highly toxic” substance tied to autism and neurological disorders.
By reposting their message without commentary, Trump allowed their warnings to stand on their own, signaling alignment with growing calls to re-examine vaccine ingredients that have been dismissed for decades.
Whoa pic.twitter.com/ZcgTDFss6z
— Karli Bonne’ 🇺🇸 (@KarluskaP) September 8, 2025
Thimerosal was first introduced into vaccines in the 1930s to prevent bacterial contamination in multi-dose vials. Although gradually phased out of routine childhood shots starting in the early 2000s, it has remained a flashpoint in the vaccine debate.
For critics, its presence symbolizes the willingness of pharmaceutical companies and regulators to put convenience over safety, while defenders claim it has never posed a problem. Trump’s decision to bring the issue back into public view ensures that this chapter is far from closed.
The move also underscores the rising influence of Health and Human Services Secretary Robert F. Kennedy Jr., who has long challenged the medical establishment’s claims about vaccine safety.
Since taking office, Kennedy has pushed for more openness and accountability from regulators, breaking from the long tradition of deference to pharmaceutical companies. His appointment marked a historic shift, bringing perspectives once considered fringe into the halls of federal power.
By amplifying the Geiers’ arguments, Trump not only reignited discussion about thimerosal but also signaled support for Kennedy’s broader mission: questioning outdated practices, demanding transparency, and refusing to accept industry talking points at face value.
With public trust in health agencies already fragile, today’s post shows that the debate over vaccine safety is not going away—it is gaining momentum at the very highest levels of government.
For many in the alt-health community, this represents a watershed moment: a sitting president openly circulating material that challenges entrenched narratives and puts health freedom back at the center of national politics.