There is no credible scientific evidence that government-mandated vaccines cause dementia or contribute to its rise. Dementia, including Alzheimer’s disease, is primarily linked to aging and other well-established risk factors, not vaccination status.
Dementia rates are increasing mainly because of demographic changes, especially the aging of populations worldwide. For example, in the United States, the number of people with Alzheimer’s disease is projected to rise from over 6 million in 2020 to nearly 14 million by 2060, largely due to the growing number of older adults[1][5]. Age is the strongest known risk factor for dementia, and as baby boomers and other large cohorts grow older, more cases naturally occur[1].
Recent studies show that cognitive disabilities and dementia diagnoses have increased in some age groups, including younger adults, but these trends are complex and influenced by multiple social, environmental, and health factors. For instance, a Yale study found that cognitive disability rates among U.S. adults rose from 5.3% in 2013 to 7.4% in 2023, with the largest increase among adults under 40 years old[3][4]. However, this increase is not linked to vaccines but is more likely related to other factors such as lifestyle, mental health, environmental exposures, and possibly improved awareness and diagnosis.
Vaccines undergo rigorous testing for safety and efficacy before approval and continuous monitoring afterward. Authoritative health organizations such as the Centers for Disease Control and Prevention (CDC), the World Health Organization (WHO), and the Alzheimer’s Association do not list vaccines as a risk factor for dementia. Instead, they emphasize known risk factors like age, genetics, cardiovascular health, diabetes, smoking, and brain injuries[1][5].
The rise in dementia cases also reflects improvements in diagnosis and reporting, as well as increased survival from other diseases that previously shortened life spans. Additionally, the closure of many nursing homes and care facilities in the U.S. since 2020 has created challenges in dementia care access, but this is unrelated to vaccination policies[1].
In summary, the scientific consensus based on extensive research and authoritative sources is that dementia is rising due to aging populations and other health and social factors, not because of government-mandated vaccines.
—
Sources:
[1] Nature: “Can We Fix America’s Dementia Care Crisis before It’s Too Late?” (2025)
[3] Yale News: “U.S. adults report rising rates of cognitive disability” (2025)
[4] News-Medical: “Cognitive challenges rise sharply among younger adults in the U.S.” (2025)
[5] PMC: “The National Dementia Workforce Study: Overview” (2020)
