There was no causal linkage because they couldn't determine why people were fasting: suppressed appetite due to illness, suppressed appetite due to being a smoker (which is very common), skipping meals due to poverty.
It also found that while cardiovascular deaths increased by 91% overall deaths were completely unchanged...which is a bit difficult to reconcile.
I think you completely missed the point. Sure, it's a new result and being an outlier needs to be treated with care (which I believe I said). It's still a more rigorous finding of health effect than anything in the grandparent's comment about how you should fast to avoid Alzheimer's. Ergo advice like that is bad.
It seems counterintuitive, and opposite of what is promoted.
I'll have to check it out more.
But from AHA, this is enough of a dramatic result to at least follow up on.
8-hour time-restricted eating linked to a 91% higher risk of cardiovascular death
https://newsroom.heart.org/news/8-hour-time-restricted-eatin...
No free lunch in personal health decisions, alas. Really the only good advice is stick to well-established science, be healthy in general, avoid internet advice, and don't sweat the small stuff.