In 2025, over 420 anti-science bills targeting public health protections like vaccines, milk safety, and fluoride were introduced across the U.S., with approximately 30 now enacted in 12 states. The bills are part of a coordinated effort by activists aligned with Health and Human Services Secretary Robert F. Kennedy Jr., aiming to erode established health safeguards built over decades.
These measures promote conspiracy theories linked to the anti-vaccine movement, leading to declining vaccination rates and the resurgence of infectious diseases. The Dahlberg family, who lost their son Liam to a vaccine-preventable illness, illustrate the tragic consequences of this growing anti-science sentiment.
Despite evidence demonstrating the efficacy of vaccines, fluoride, and pasteurization, activists propagate unfounded claims that these public health measures are harmful. Many bills are inspired by conspiratorial beliefs, with significant backing from groups connected to Kennedy, such as MAHA Action and Stand for Health Freedom.
Some bills have successfully passed, often framing anti-science measures as matters of personal freedom. Experts warn that this trend shifts conspiracy theories from the fringes to mainstream policy discussions, potentially risking public health.
Advocates for science-based health policies assert that individual decisions impacting others are not merely personal, reflecting a broader social responsibility. Meanwhile, ongoing efforts to eliminate religious exemptions for vaccinations highlight growing concerns over community health and safety.
