A loss of smell is a surprising early warning sign of , a new study suggests. Researchers found that people with the APOE e4 gene, the same one revealed he had two copies of last year, were more likely to lose their sense of smell and suffer cognitive decline than those without the gene. 'Testing a person’s ability to detect odors may be a useful way to predict future problems with cognition,' study author Dr Matthew S. GoodSmith of the University of said.
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