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Updated: Aug 12, 2026
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Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
Cognitive effects of exogenous melatonin administration in elderly persons: a pilot study
Joel S Peck1, Daniel B LeGoff, Iqbal Ahmed
1University of Hawaii, John A. Burns School of Medicine, Department of Psychiatry, 1356 Lusitania Street, 4th Floor, Honolulu, HI 96813, USA.
Summary
Melatonin supplements improved sleep quality and cognitive function, specifically verbal learning, in healthy elderly individuals. This 1 mg nightly dose may help combat age-related cognitive decline.
Area of Science:
- Gerontology
- Neuroscience
- Sleep Medicine
Background:
- Circadian rhythm disruption is linked to cognitive impairments resembling age-related cognitive decline.
- Understanding interventions for cognitive function in the elderly is crucial for healthy aging.
Purpose of the Study:
- To investigate the effects of exogenous melatonin on cognitive functioning in healthy elderly subjects.
- To determine if melatonin can mitigate cognitive impairments associated with circadian rhythm disruption in aging.
Main Methods:
- A double-blind, placebo-controlled pilot study involving 26 healthy elderly participants.
- Participants received either 1 mg of melatonin or a placebo nightly for 4 weeks.
- Cognitive tests and sleep questionnaires were administered at baseline and after 4 weeks.
Main Results:
- Melatonin administration significantly improved subjective reports of morning restedness.
- Sleep latency after nocturnal awakening was reduced with melatonin treatment.
- Improvements were observed in the California Verbal Learning Test-interference subtest scores.
Conclusions:
- A nightly dose of 1 mg melatonin may enhance cognitive functions and sleep quality in elderly individuals.
- Melatonin shows potential as a therapeutic agent for age-related cognitive decline.
- Further research is warranted to confirm these findings and explore therapeutic applications.
