My cancer-stricken grandpa was chugging cheetos and jelly beans until the day he died last year
My grandma (last living grandparent) is pounding through a crate of Ensure chemslop every week, so it probably won't be long for her
There's nothing I could do/can do about either of them. My parents box me out from trying to bring any seedlings of truth up when we're together, and TBH it's probably for the best since the chance of me successfully changing their ways is ~zero
This is part of the story for so many of us truth-seeking millennials; we have to watch our family members wilt away from all the bullshit lies they were fed throughout their lives, while they either call us crazy for going against the status quo that's killing them, or another family member(s) jump in and gatekeep (usually parents blocking us from disrupting things higher up the family)
It is what it is. This is why I always stay focused on the future; both for my own kids, and the next generation as a whole. You simply cannot save everyone, and you need to be selfish with your time/energy if you truly care about making the most positive change in the world that you possibly can.