From Newsgroup: sci.misc

Routine vaccines may cut dementia risk--experts have startling
hypothesis on how

Vaccines may be training a part of our immune system long thought to
be untrainable.

More and more routine vaccines are being linked to lower risks of
dementia. Shots against seasonal flu, RSV, tetanus, diphtheria, and
pertussis (Tdap), pneumococcal infections, hepatitis A and B, and
typhoid have all been linked to lower risks. And one of the strongest connections is from vaccination against shingles, with more data
supporting the link still coming in. But as the evidence mounts,
scientists continue to puzzle over the pleasant surprise--how are
vaccines that target specific pathogens inadvertently shielding our
minds from deterioration?

A burgeoning hypothesis offers a brow-raising possibility: The shots
may be protecting our noggins by training the part of our immune
system that had long been considered untrainable. If the idea holds
up, it could generate a deeper understanding of fundamental aspects of
our immune systems while opening new avenues to treating or preventing dementia. It could also add another dimension to the benefits of
vaccines, which already save millions of lives worldwide.

https://arstechnica.com/health/2026/05/routine-vaccines-may-cut-dementia-risk-experts-have-startling-hypothesis-on-how/

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