I suspect some of the brain cancers will be to do with smart phones.
It even says in the ts and cs on people's phones to make sure they hold them away from their head.
There's also been a spike in breast cancers where people pop their phone in breast pocket, and testicular cancer where men put phone in their trouser pockets.

It's a mix of things I suspect, not just the jibby jabby.
The fricking huge long PCR test swabs jammed up people's noses, breaking through the brain barrier, allowing things into their brains which would never ordinarily have got past the brain barrier.

Aluminium in the jibby jabby and cloud seeding can now make it's way into the brain much more easily, which means more dementia,

They hit us a hundred ways every day in their efforts to make us sick and give us cancer.