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A major new study from Denmark shows no link between aluminum in childhood vaccines and an increased risk of diseases like asthma or autism. Researchers examined health and vaccination records of over 1.2 million children from 1997 to 2018. They found no evidence that aluminum-containing vaccines cause harm.
Aluminum salts are added to some vaccines to help the body build stronger immunity. They’ve been used safely for over 70 years in vaccines for diseases like tetanus and hepatitis. However, vaccine opponents have raised concerns, suggesting aluminum might overstimulate children’s immune systems. This new research helps put those fears to rest.
The study looked at 50 different childhood conditions, including allergies, autoimmune diseases, and neurodevelopmental disorders. None were found to occur more often in kids who received aluminum-containing vaccines. Even when children received more vaccines (and more aluminum) over time, researchers saw no rise in illness — which strongly argues against any harmful “dose effect.”
Experts in the U.S. also praised the study. Dr. Anna Durbin of Johns Hopkins said the findings should reassure parents, especially those worried about asthma. Even researchers who previously explored a possible link to asthma said this new data is strong and reassuring.
Although the study wasn’t a randomized trial (which would be unethical because it would involve not vaccinating some children), its size and thorough design make its conclusions very reliable. Scientists stress that these vaccines are essential worldwide, and there are no safe replacements for those containing aluminum.
Bottom line: Childhood vaccines that include aluminum are safe, effective, and critical for protecting kids’ health.
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