I think you may have just hit on a key issue without even realizing it, at least in your fathers case.

Ive been soldering a bit and watching a bunch of youtube tutorials and while we mainly use lead free solder (which wasnt the case back pre 90's), I see many people who still recommend to use it for tinning and whatever since lead has such a low melting point.

I do some basic soldering, and use lead free solder and even then I have to hold my breath for a minute or two at a time because even a whiff of the stuff makes my head ache. I swear ever since that work poisoning, ive become very sensitized to chemicals.

This is in a room with a fan pointed towards open windows.

But yeah lead is terrible stuff, I suspect the little bit I was exposed to is what is causing my kidney->parathyroid issues.

But something society isnt talking about is dementia is exploding (was the case even before covid), no one can really explain why.

What else could it be but fucking chemicals in everything? Planet 9 hitting us with xrays or something? Who knows :/.

-edit-

The number of people living with dementia is projected to rise dramatically—from over 55 million in 2020 to nearly 139 million by 2050—driven primarily by rapidly aging global populations and increased life expectancy, meaning more people are reaching ages where dementia is most common. While this surge in numbers is clear, the exact reasons for the prevalence of neurodegenerative diseases are complex, with researchers still identifying the precise interaction of genetic, environmental, and lifestyle factors.

People living longer, thats a good one. I cant imagine people are living their best lives stressed living paycheck to paycheck.

Another good example of lead in the environment, most of you should know exactly why they took lead out of gasoline even though it makes the fuel burn more consistently and efficiently.