alt Hacker NewsThe abstract mentions controls, but unfortunately I can't access the actual paper to see what they are. This seems really hard to isolate. Loneliness, inactivity, and depression are huge risk factors for dementia. Drinking caffeine in the morning seems like a really good proxy for whether an individual has somewhere to be that day. Definitely not 100% of course, but highly correlated.
>Drinking caffeine in the morning seems like a really good proxy for whether an individual has somewhere to be that day.
Anecdotally, on a Sunday morning with 8 hours of sleep and no plans, I'm still going to caffeinate at least once, probably with breakfast. If I'm trying to stay up a long time or am sleep deprived I may caffeinate 2 or 3 times that day. I don't typically take a whole day off of caffeine based on my plans. If I have a doctor's appointment and am not supposed to eat/drink, I'll still do it later when I get back home.