Poor sleep accelerates physical and mental decline in older adults, study finds

A new study has examined how sleep disorders affect movement and thinking in older adults. Published in BMC Geriatrics, the research suggests that poor sleep speeds up physical and mental decline—especially in those already showing signs of muscle loss or frailty. Over 1,200 participants from Germany, Austria, and Switzerland took part in the investigation.

The SOMNUS-DARE study tracked two groups: one with frail, sarcopenic individuals and another with healthy, active elderly people. Researchers used overnight sleep monitoring to detect issues like fragmented sleep and reduced deep sleep. They also tested memory, attention, and problem-solving skills, alongside physical measures such as walking speed, balance, and grip strength.

Results showed that older adults with sarcopenia and severe sleep problems declined faster in both movement and cognition. In contrast, those with fewer sleep disturbances maintained better mobility and mental function. The team believes disrupted sleep may hinder muscle repair and alter brain adaptability, possibly accelerating neurodegenerative conditions. Based on these findings, the study recommends regular sleep assessments for older adults—particularly those with early muscle weakness or cognitive concerns. It also suggests that treatments like cognitive behavioural therapy for insomnia (CBT-I) or managing sleep apnoea could help slow disability progression.

The research highlights a clear link between sleep quality and age-related decline. Older adults with poor sleep and sarcopenia face a steeper drop in physical and mental abilities. Routine sleep checks and targeted interventions may now play a bigger role in care plans for vulnerable elderly populations.