(CNN) -- Your spouse "had to stay late at work" -- are you skeptical? Do you think your friend doesn't like you if he cancels dinner plans? Do you suspect that your co-worker is putting her ambitions ahead of the team?
Curmudgeons of the world, listen up: This line of negative thinking might actually hurt your health.
"There have been previous studies that showed that people who were cynical were more likely to die earlier and have other poor health outcomes, but no one that we could tell ever looked at dementia," said Anna-Maija Tolppanen, one of the study's authors and a professor at the University of Eastern Finland. "We have seen some studies that show people who are more open and optimistic have a lower risk for dementia so we thought this was a good question to ask." Read more.
Are you a cynical person?