A recent randomized controlled trial conducted in Istanbul has demonstrated that a circadian-aligned aromatherapy protocol can significantly enhance sleep quality and cognitive function in older adults. The study involved 60 participants aged 65 and over, who were divided into an intervention group receiving inhalation therapy with specific essential oil blends and a control group. The aromatherapy regimen included a morning peppermint–palmarosa blend and a nighttime mix of vetiver, cedarwood, clary sage, petitgrain, and grapefruit oils, administered for 10 minutes daily over 30 days.

The findings reveal substantial improvements in sleep metrics for the intervention group, including a 1.29 increase in total sleep time, a 1.34 increase in REM sleep duration, and a 1.47 increase in deep sleep (N3) duration, all statistically significant (p < 0.001). Additionally, participants reported decreased sleep latency (d = –1.12) and lower daytime sleepiness, alongside notable enhancements in cognitive performance measured by orientation, memory, and concentration. The control group did not exhibit any significant changes, underscoring the efficacy of the aromatherapy intervention.

This study highlights the potential of non-pharmacological interventions like aromatherapy in addressing sleep disturbances and cognitive decline among older adults. The evidence supports a shift towards integrating such complementary therapies into standard care practices, particularly in residential settings. As researchers explore the underlying mechanisms of these improvements, this approach could influence future drug development timelines and therapeutic strategies aimed at enhancing healthspan and cognitive resilience in aging populations.

Source: academic.oup.com