In 2005-2006, Jayant Pinto of the University of Chicago and his colleagues asked all participants to perform a simple test to identify five common odors (rose, leather, fish, orange, and mint) using a number of misidentified odors. by odor severity score.
Five years later, the researchers wanted to identify as many participants as possible and conduct this odor test a second time. During the five-year interval between the two trials, 430 of the original participants died (12.5% of all participants). Of these, 39% of those who failed the first olfactory test died before the second test, compared to 19% of those with moderate loss of smell at the first test, and only 10% of those with a healthy sense of smell.
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