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Smell Loss Linked to Aging Physical Decline
2 May
Summary
- Poor sense of smell in older adults linked to physical decline.
- Study shows faster decline in physical health markers over time.
- Olfactory training may help improve sense of smell.
A recent study published in JAMA Otolaryngology -- Head & Neck Surgery indicates a significant link between a diminished sense of smell and physical decline in older adults. The research analyzed data from over 5,400 individuals aged 65 and older, assessing their olfactory function alongside markers of physical health such as muscle strength, balance, and gait speed.
Participants with a poorer sense of smell demonstrated lower scores across these physical health indicators. Furthermore, over an approximate seven-year period, individuals with impaired olfaction experienced a more rapid rate of decline in their physical capabilities compared to their counterparts with a better sense of smell.
While the study identifies a correlation, not a direct cause-and-effect relationship, experts propose potential explanations. These include fundamental molecular and cellular mechanisms connecting smell and physical regeneration, as well as smell loss being an early indicator of diseases like Parkinson's and Alzheimer's, both known to cause physical and cognitive impairment.
Doctors emphasize that while sense of smell isn't routinely tested, incorporating such assessments into healthcare could aid in preventing cognitive and physical impairments in seniors. Simple practices like olfactory training, regularly sniffing distinct aromas, and maintaining healthy lifestyle habits like good nutrition and exercise are encouraged to support sensory function and overall aging well.
