Key Insights from Sleep Research on Aging and Health

Dr. Katie Stone, a sleep researcher at the Sutter Health Research Institute, has dedicated over twenty years to studying the effects of sleep on conditions such as dementia, heart health, and overall wellness. Her work has begun to reshape perspectives on sleep as a fundamental component of healthy aging.

Sleep is being recognized as a third pillar of healthy aging, alongside diet and exercise. Research demonstrates that quality sleep is essential for brain function, immune response, cardiovascular health, metabolic processes, and overall well-being, indicating that sufficient sleep should be prioritized.

Furthermore, sleep disturbances may signal an increased risk of cognitive decline. Dr. Stone was among the early researchers to link sleep apnea with a higher likelihood of mild cognitive impairment and dementia, particularly in older women. This relationship has prompted additional research into how sleep disorders could be early indicators of cognitive issues, as important brain maintenance tasks occur during sleep, such as the removal of toxins linked to neurodegenerative diseases.

Current studies, including the ESSENTIAL trial led by Dr. Stone, aim to determine whether improving sleep quality can mitigate cognitive decline. This trial focuses on treating sleep apnea in older adults who are currently cognitively healthy, based on the premise that interventions are most effective before symptoms manifest.

While millions face chronic insomnia, effective treatments do not always involve medication. Cognitive behavioral therapy for insomnia (CBT-I) is regarded as the preferred first option, but access to specialists is often limited. To address this, researchers are investigating online, self-guided CBT-I programs that can broaden access to proven treatments.

Combining insomnia medication with digital CBT-I may enhance treatment outcomes. Dr. Stone's COZI trial shows that participants receiving this combination therapy saw lasting benefits in reducing insomnia symptoms, particularly important for older adults for whom certain sleep medications can pose risks.

Researchers are also examining the implications of sleep quality in hospital settings. Poor sleep during hospitalization has been linked to delirium and longer recovery periods. Dr. Stone and her team are initiating a pilot study at Sutter’s California Pacific Medical Center to determine if improved sleep protocols can enhance recovery and reduce complications, potentially influencing practices in hospitals widely. These findings emphasize that sleep not only reflects overall health but may significantly affect how the body and brain age.