A pilot study by physician and Ph.D. Anders Sode West, published in 2022, shows that circadian lighting, which mimics the human biological rhythm, can reduce agitation by up to 71% in nursing home residents with dementia.
Agitation can make daily life difficult for both residents and caregivers. The study highlights Chromaviso’s circadian lighting as an effective, medication-free solution for improving well-being and the working environment in nursing homes.
What is agitation, and why is it a problem?
People with dementia often experience restlessness and disorientation, which can lead to agitation. This may manifest as aimless wandering, repetitive shouting, frustration, or increased irritability toward the environment. Such behaviors can be stressful for the resident, other residents, and staff who manage these challenges daily.
The study: Chromaviso’s circadian lighting as a solution
To examine the effect of circadian lighting, a group of residents in a Danish nursing home was exposed to Chromaviso’s dynamic circadian lighting, which adjusted throughout the day to support the natural biological rhythm. The lighting was controlled by a specially developed dynamic light protocol designed to maximize health benefits at precisely timed intervals. This meant that the light was warm and dimmed in the morning and evening to promote calmness, while it became brighter and bluer during midday to enhance wakefulness and energy—aligning with the body's natural circadian rhythm.
The trial was conducted as a six-month pilot study with five residents. Care staff recorded residents' behavior before and after the installation of the circadian lighting using the recognized Cohen-Mansfield Agitation Inventory measurement method. The results showed a significant improvement—agitation was reduced by 71.2%, and some behavioral patterns disappeared entirely.
What does this mean for nursing homes?
The results suggest that Chromaviso’s circadian lighting can be a valuable method for reducing restlessness and improving the quality of life for people with dementia. At the same time, staff reported an improved work environment, as residents appeared calmer and more engaged in social activities. However, there is recognition of the need for larger randomized studies in this field to further support the evidence. Nevertheless, this pilot study aligns with previous research demonstrating the positive effects of circadian lighting in various areas related to sleep and circadian rhythm regulation.
Future perspectives
Chromaviso’s circadian lighting already improves the daily lives and well-being of 100,000 people every day. This is the future of lighting design—a solution that promotes health, well-being, and quality of life in nursing homes, hospitals, and other healthcare facilities.
At Chromaviso, we develop evidence-based lighting solutions that support the circadian rhythm and create a healthier environment for employees, patients, and residents in the healthcare and social sectors. This research confirms the value of Chromaviso’s circadian lighting and its potential as an effective, non-medical approach for institutions in the healthcare sector.
Kilder:
- https://videnscenterfordemens.dk/en