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The single largest vaccine\u2013dementia study ever conducted (n=13.3 million) finds risk intensifies with more doses, remains elevated for a full decade, and is strongest after flu and pneumococcal shots.<\/p>\n
The single largest and most rigorous study ever conducted on vaccines and dementia \u2014 spanning 13.3 million UK adults \u2014 has uncovered a deeply troubling pattern: those who received common adult vaccines faced a significantly higher risk of both dementia and Alzheimer\u2019s disease.<\/p>\n
The risk intensifies with more doses, remains elevated for a full decade, and is strongest after influenza and pneumococcal vaccination. With each layer of statistical adjustment, the signal doesn\u2019t fade \u2014 it becomes sharper, more consistent, and increasingly difficult to explain away.<\/p>\n
And critically, these associations persisted even after adjusting for an unusually wide range of potential confounders, including age, sex, socioeconomic status, BMI, smoking, alcohol-related disorders, hypertension, atrial fibrillation, heart failure, coronary artery disease, stroke\/TIA, peripheral vascular disease, diabetes, chronic kidney and liver disease, depression, epilepsy, Parkinson\u2019s disease, cancer, traumatic brain injury, hypothyroidism, osteoporosis, and dozens of medications ranging from NSAIDs and opioids to statins, antiplatelets, immunosuppressants, and antidepressants.<\/p>\n
Even after controlling for this extensive list, the elevated risks remained strong and remarkably stable.<\/p>\n
The vaccine does not stay in the arm.<\/p>\n
Its products do not remain confined to the individual.<\/p>\n
And the biological signals generated in response may behave in ways that resemble \u201cspread,\u201d even though no infectious agent is present.<\/p>\n