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.

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[Purple Cow]

Also of note is that the effect from seasonal flu seems to be dose dependent. My question is: does dosage follow lifestyle? In other words, I can see how someone’s lifestyle—especially if they have the discipline, time, and resources to get yearly flu vaccinations—could affect dementia risk independently of the vaccine itself. But would lifestyle change the actual dose someone receives? For example, does having more money mean getting more vaccine, better access, or more frequent vaccination?

"Lifestyle" is an interesting term, here--some of my coworkers started getting the annual flu vaccine when our employer started giving them for free at work. In earlier years, they would pay for the vaccine if we went to a specific nearby clinic, and fewer people bothered.

In these scary times, what state you live in may also be relevant: Massachusetts has fewer residents without health insurance than most states, and now officially recommends more vaccines than the federal government. That combination means more people who can get certain vaccines without paying for them specifically, and "it's free at the nearby drugstore" will increase uptake compared to having to go out of your way, or pay even a small fee.