Earlier quoted context omitted.
> After full covariate adjustment, consumption of >6 cups/day was associated with 53% higher odds of dementia compared to consumption of 1–2 cups/day So what they're saying is too much of a (good? fine? reasonable?) thing can be a bad thing? Not sure this supports a case against caffeine. You should look up what happens if someone consumes too much salt!
I think my edit addresses your point.
If people are drinking 3 travel mugs a day... then sure...? Not sure what that changes.