Large Denmark Study Finds No Link Between Aluminum in Vaccines and Chronic Illness

A major study from Denmark has found no evidence that aluminum in childhood vaccines is linked to chronic illnesses, countering long-standing claims by vaccine skeptics. The research, published in the Annals of Internal Medicine, reviewed health records of over 1.2 million children born between 1997 and 2018 and tracked them through 2020.

Aluminum salts are widely used as adjuvants in vaccines to boost immune response. According to the Children’s Hospital of Philadelphia, these compounds have been used safely for decades. This new study evaluated aluminum exposure by age 2 and found no increased risk of 50 chronic conditions, including autism, asthma, and autoimmune diseases.

Only 1.2% of children in the study received no aluminum-adsorbed vaccines before age 2. Among the rest, aluminum exposure varied from 0.125 mg to 1.00 mg per dose, with a median cumulative exposure of around 3 mg. Despite long-standing claims of potential neurotoxic effects, researchers saw no correlation between exposure levels and adverse health outcomes.

While the authors note that rare side effects can’t be entirely ruled out, they concluded there is no population-level evidence of harm from aluminum in vaccines.