Studies

The effect of light on sleep quality, stress levels, healing speed, medical errors and length of hospital stay at The Vesey Hospital in the UK

About study

Overall health

Title:

Lighting’s Impact on Patient Wellbeing: Insights from The Vesey

Author: Dr. Natalie Summers, The Vesey Research Institute 
Date: 17. October 2025
Source: https://www.thevesey.co.uk/blog/the-impact-of-lighting-on-patient-wellbeing?_x_tr_sl=en&_x_tr...

Brief summary

The English study *Lighting’s Impact on Patient Wellbeing: Insights from The Vesey* analyzes the influence of lighting conditions on the physical and mental health of patients, as well as on the performance of healthcare staff in hospital environments. The research is based on clinical observations, controlled studies, and long-term operational data from healthcare facilities that implemented increased access to natural daylight and circadian/human-centric artificial lighting systems. The study confirms that a well-designed lighting environment has a measurable impact on sleep quality, stress levels, healing speed, staff error rates, and length of hospitalization.

Circadian Rhythm as the Key to Faster Recovery

Implementing lighting that faithfully simulates the natural daylight cycle brings significant improvements in patients’ biological functions. Studies have shown that properly timed changes in the color spectrum lead to better regulation of sleep and wakefulness, which in geriatric wards resulted in a 43% reduction in falls.Synchronizing the internal clock with the environment helps reduce the incidence of insomnia and delirium, especially in critical care patients. Dynamic changes in light intensity have also been proven to improve orientation and cognitive function, as confirmed by successful tests in intensive care units.

Mental Well-Being and Pain Relief Through Light

The use of biodynamic and natural light has a direct impact on emotional state and pain perception. Patients in environments with sufficient daylight show a 20% shorter length of hospitalization compared to those in darker spaces. In psychiatric wards, access to morning sunlight led to a 30% reduction in anxiety,and in depressive conditions, targeted light adjustment resulted in a 25% improvement.Another highly significant outcome is a 15% decrease in analgesic consumption among orthopedic patients, where lighting regimes help better manage pain and stress.

Safer Workplaces and a Cleaner Hospital Environment

Investing in high-quality lighting also pays off in terms of safety and performance of healthcare staff. Properly set lighting parameters reduce fatigue among nurses and doctors, leading to a 20% decrease in medication errors and a 15% lower rate of cognitive mistakes.Modern technological trends additionally integrate UV-C disinfection modules directly into luminaires, making it possible to eliminate pathogens with an efficiency of 99.99%.In clinical ICU trials, this innovation led to a 40% reduction in hospital-acquired infections,making light an active tool in infection prevention.

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