Dec 18, 2023
Can using aromatherapy oils every night help improve memory?
Being regularly exposed to multiple scents—or olfactory
enrichment—has shown promise in enhancing cognitive abilities in
older adults.
A new study found that using aromatherapy essential oils such as
lavender and rose nightly boosted word recall by 226% and improved
the functioning of a key brain pathway that plays a role in
learning and memory.
These findings suggest that olfactory enrichment may be a low cost
approach to reduce neurological impairment in older adults.
In the United States, cognitive decline, which is characterized by
confusion or memory loss, is estimated to affect 11.1% Trusted
Source of the population, or one in nine adults.
Previous research has shown that cognitive decline is accompanied or even preceded by loss of sense of smell in various neurological disorders, including Alzheimer’s diseaseTrusted Source, dementia, and Parkinson’s diseaseTrusted Source.
Some research indicates that regular exposure to multiple scents
or odorants — a practice known as olfactory enrichment — can have
beneficial effects on cognitive abilities in older adults.
In a new clinical study, researchers at the University of
California, Irvine, examined if a nightly aromatherapy regimen for
six months could improve cognitive skills in older adults.
They observed significant improvements in word list recall as well
as improved functioning in the part of the brain known as the left
uncinate fasciculus after olfactory enrichment with aromatherapy
oils.
7 different aromatherapy scents
For the study, the researchers recruited 43 participants, ages
60–85 years, who were in good general health with healthy
cognition.
The participants were randomly assigned to two groups. The
experimental group, made up of 20 individuals, was exposed to
essential oils nightly. Meanwhile, the control group, made up of 23
participants, was exposed to trace amounts.
For six months, the participants were exposed to either a higher or lower concentration of essential oils nightly for two hours as they were going to sleep, using a nebulizing fragrance diffuser.
The diffuser rotated through seven different scents from The Essential Oil Company (Portland, Oregon), one for each day of the week: rose, orange, eucalyptus, lemon, peppermint, rosemary, and lavender.