In The Politics of Autism, I analyze the myth that vaccines cause autism. This bogus idea can hurt people by allowing diseases to spread. Examples include measles, COVID, flu, and polio.
A number of posts discussed Trump's support for the discredited notion.
Another leading anti-vaxxer is Robert F. Kennedy, Jr. He has repeatedly compared vaccine mandates to the Holocaust. Rolling Stone and Salon retracted an RFK article linking vaccines to autism. He is part of the "Disinformation Dozen." He helped cause a deadly 2019 measles outbreak in Samoa.
Aluminum in childhood vaccines is a target of vaccine skeptics, who blame the ingredient on myriad health concerns. But a study of more than 1 million people, published Monday in the Annals of Internal Medicine, found no link between aluminum in vaccines and an increased risk of 50 chronic conditions, including autoimmune diseases, allergies and autism.
Health and Human Services Secretary Robert F. Kennedy Jr., who has spread vaccine misinformation for years, said on a podcast in 2024 that aluminum in vaccines is “extremely neurotoxic.” (An HHS spokesperson did not respond to a request for comment.)
Senior study author Anders Hviid said that, as a parent, he understood the concerns about vaccine safety.
“Our study addresses many of these concerns and provides clear and robust evidence for the safety of childhood vaccines. This is evidence that parents need to make the best choices for the health of their children,” said Hviid, who is a professor and the head of epidemiology research at Statens Serum Institut, a sector of the Danish Ministry of Health focused on combating and preventing infectious diseases.
Aluminum-Adsorbed Vaccines and Chronic Diseases in Childhood: A Nationwide Cohort StudyFREE
Publication: Annals of Internal Medicine
Abstract
Background: Aluminum is used as an adjuvant in nonlive vaccines administered in early childhood. Concerns persist about potential associations between vaccination with aluminum-adsorbed vaccines and increased risk for chronic autoimmunity, atopy or allergy, and neurodevelopmental disorders. Large-scale safety data remain limited.
Objective: To assess the association between cumulative aluminum exposure from early childhood vaccination and risk for autoimmune, atopic or allergic, and neurodevelopmental disorders.
Design: A cohort study linking nationwide registry data on childhood vaccinations, outcome diagnoses, and potential confounders, leveraging the variations in the aluminum content of childhood vaccines over time.
Setting: Denmark, 1997 to 2020.
Participants: 1 224 176 children born in Denmark between 1997 and 2018 who were alive and residing in the country at age 2 years.
Intervention: Cumulative aluminum amount received (per 1-mg increase) through vaccination during the first 2 years of life.
Measurements: Incident events of 50 chronic disorders, including autoimmune (dermatologic, endocrinologic, hematologic, gastrointestinal, and rheumatic), atopic or allergic (asthma, atopic dermatitis, rhinoconjunctivitis, and allergy), and neurodevelopmental (autism spectrum disorder and attention deficit–hyperactivity disorder).
Results: Cumulative aluminum exposure from vaccination during the first 2 years of life was not associated with increased rates of any of the 50 disorders assessed. For groups of combined outcomes, adjusted hazard ratios per 1-mg increase in aluminum exposure were 0.98 (95% CI, 0.94 to 1.02) for any autoimmune disorder, 0.99 (CI, 0.98 to 1.01) for any atopic or allergic disorder, and 0.93 (CI, 0.90 to 0.97) for any neurodevelopmental disorder. For most individually analyzed outcomes, the upper bounds of the 95% CIs were incompatible with relative increases greater than 10% or 30%.
Limitation: Individual medical records were not reviewed.
Conclusion: This nationwide cohort study did not find evidence supporting an increased risk for autoimmune, atopic or allergic, or neurodevelopmental disorders associated with early childhood exposure to aluminum-adsorbed vaccines. For most outcomes, the findings were inconsistent with moderate to large relative increases in risk, although small relative effects, particularly for some rarer disorders, could not be statistically excluded.
