But a loss of smell has been linked to health complications such as depression and cognitive decline. And mounting evidence shows that olfactory training, which involves deliberately smelling strong scents on a regular basis, may help stave off that decline.
Twenty participantsâall older than 60 years and generally healthyâreceived six months of overnight olfactory enrichment, and all significantly improved their ability to recall lists of words compared with a control group.
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