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Aging and Olfactory Training: A Scoping Review.

Megan Loughnane1, Victoria Tischler1, Reem Khalid Saifeldeen1

  • 1School of Psychology, University of Surrey, Guildford, UK.

Innovation in Aging
|June 17, 2024
PubMed
Summary
This summary is machine-generated.

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Olfactory training (OT) benefits older adults, including those with cognitive impairment. This training improves smell, cognition, and mood, and may protect against cognitive decline.

Area of Science:

  • Gerontology
  • Neuroscience
  • Otolaryngology

Background:

  • Olfactory dysfunction is common in aging.
  • Olfactory training (OT) may improve olfactory and cognitive function.
  • Benefits of OT in older adults and those with cognitive impairment require further investigation.

Purpose of the Study:

  • To review the effects of OT on olfactory function, cognition, and well-being in older adults.

Main Methods:

  • A scoping review of four major databases (PubMed, Embase, EbscoHost, SCOPUS).
  • Included original research studies on human populations aged 55+ undergoing any OT with olfactory testing.
  • Data were synthesized and presented narratively.

Main Results:

Keywords:
CognitionOlfactionSmell trainingWell-being

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  • 23 studies were included.
  • OT showed benefits for older adults, including those with cognitive impairment.
  • Improvements were noted in olfactory function, semantic verbal fluency, working memory, and reduced depressive symptoms.

    • Conclusions:

    • OT benefits extend beyond olfactory function to include cognitive improvements and mood amelioration.
    • OT may offer protection against cognitive decline in older adults.
    • Further research is needed for specific dementia types to explore OT's benefits.