Dr. Eric Ding’s Journal

Dr. Eric Ding’s Journal

Unexpected Side Effects: Vaccines Protect the Aging Brain and Heart

Anti-vaxxers don't want you to know about off-target benefits.

Eric Feigl-Ding's avatar
Eric Feigl-Ding
Jan 13, 2026
∙ Paid

An enormous discovery hiding in plain sight is forcing scientists to rethink what vaccines actually do to the human body, and it carries massive implications for aging, dementia, heart disease, and the future of public health.

A growing body of peer‑reviewed research now suggests that vaccines recommended for older adults may provide benefits beyond preventing infection. Large population studies and massive systematic reviews now reveal something extraordinary: vaccination is consistently linked to substantially lower risks of dementia and cardiovascular disease.

I posted about this months ago when the research first started to emerge. The mainstream media is finally starting to pay attention.

These unexpected positive outcomes are called off-target benefits, and they’re changing our entire understanding of vaccines.

Do vaccines actually lower dementia and heart disease risk?

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