If you’re a senior who can’t smell onions, smoke, chocolate or natural gas, it’s time to see your doctor. Seniors who lose their sense of smell — which doctors call olfactory dysfunction — have higher odds of dying from all causes within five years, new research shows. Scientists had previously found a link between olfactory dysfunction and impaired thinking and memory. “We suspected there would be an association with olfactory dysfunction and mortality as well, considering that this is an early marker for a lot of neurodegenerative diseases, including Parkinson’s and dementia,” said study author Dr. Janet Choi, a resident in otolaryngology at the University of Southern California. Her team reviewed nationwide survey and death data from about 3,500 people age 40 and over. The surveys included self-reported loss of smell as well an objective smell test. Over the five-year study, researchers found no increased risk of death based on self-reported loss of smell. But the risk of death rose 18% for every 1-point decrease in scores on a “pocket smell test.” On the test, participants were asked to identify eight scents: onion, soap, leather, smoke, grape, strawberry, chocolate and natural gas. They needed to identify at least six to be considered having a normal sense of smell. The mortality link was significant for adults 65 and older, but not among those between 40 and… read on >

















