Dr. Shilpa Singi Lead Consultant   Academies and Strategies Internal Medicine, Aster Whitefield Hospital

 

A UK hospital has unveiled a 60-bed rooftop critical care garden designed for ICU patients, blending
nature, sunlight, and rehabilitation. Experts say such healing spaces may improve recovery, sleep
quality, mental health, and overall patient outcomes.

 

Can a garden become part of intensive care treatment? A hospital in the United Kingdom believes it
can. In what is being hailed as a pioneering step in patient centred healthcare, a UK hospital has
opened a rooftop critical care garden linked to its intensive care unit (ICU), allowing critically ill
patients access to fresh air, natural sunlight, greenery, and outdoor rehabilitation spaces during
recovery. The facility at the King's College Hospital NHS Foundation Trust, designed to accommodate
up to 60 critical care beds, reflects a growing global movement toward integrating nature into
healthcare settings.

 

While hospitals have traditionally focused on advanced technology, medications, and clinical
interventions, researchers and healthcare experts are increasingly recognising the role that
environmental factors play in recovery. Evidence from studies conducted over the past several
decades suggests that exposure to natural light, green spaces, and outdoor environments may help
reduce stress, improve mood, regulate sleep patterns, and support cognitive recovery. For ICU
patients, who often spend days or weeks in artificially lit environments, these benefits could be
particularly significant.

 

 

As healthcare systems worldwide rethink hospital design, the UK's latest innovation raises an
important question: Could healing gardens become the future of modern healthcare?
Why Nature Is Becoming A Part Of Modern Medicine
The concept of "healing environments" is not entirely new. However, it has gained renewed
attention following research showing that a patient's surroundings can influence both physical and
psychological recovery.

 

One of the earliest landmark studies on the subject was published in Science in 1984 by
environmental psychologist Roger Ulrich. The study found that surgical patients whose hospital
rooms overlooked trees recovered faster, required fewer pain medications, and had shorter hospital
stays than those whose windows faced a brick wall.

 

Since then, a growing body of evidence has linked access to nature with lower stress levels, reduced
anxiety, improved emotional well-being, and enhanced recovery outcomes.

 

The World Health Organization (WHO) has also highlighted the importance of healthy built
environments in promoting overall health and well-being. Similarly, research published by the
United States National Institutes of Health (NIH) suggests that exposure to natural settings can
positively affect cardiovascular health, mental health, and cognitive functioning.
Why ICU Patients Could Benefit The Most

 

 

Intensive care units are among the most challenging healthcare environments for patients. Many
critically ill individuals spend prolonged periods in enclosed spaces with limited access to daylight,
fresh air, or natural surroundings. Constant monitoring equipment, alarms, artificial lighting, and
disrupted sleep cycles can contribute to physical and psychological distress.

 

According to Dr Shilpa Singi, Lead Consultant  Academies and Strategies Internal Medicine, Aster
Whitefield Hospital, Bengaluru, access to sunlight and greenery can play an important supportive
role in recovery. "Putting greenery, natural light, and more open outdoor recovery areas into
healthcare locations is getting a lot of attention globally, and many doctors in India recognise how
much it matters. Studies have shown that exposure to sunlight and nature can lower stress, lift
mood, and support psychological health, especially among patients recovering from serious
illnesses," she says.

 

Dr Singi explains that sunlight also helps regulate circadian rhythms, the body's internal clock that
governs sleep-wake cycles, hormone secretion, and several biological functions essential for
recovery. "Sunlight has a central function in controlling the body's biological clock, or circadian
rhythm, which influences sleep patterns, hormone output, and overall recuperation," she adds.
The Link Between Natural Light And Recovery

 

Research increasingly suggests that disrupted circadian rhythms can negatively affect recovery
among critically ill patients. A review published in Critical Care reported that ICU patients frequently
experience significant disturbances in sleep and circadian function, potentially contributing to
poorer recovery outcomes, impaired immune function, and prolonged hospital stays.

 

Natural daylight exposure may help restore these biological rhythms. "In intensive care units, where
lighting is mostly artificial and patients may remain confined for long periods, access to natural light
could help reduce ICU delirium, ease agitation, and minimise sleep-related disturbances," says Dr
Singi.

 

ICU delirium, a sudden change in mental status marked by confusion, disorientation, and cognitive
impairment, affects a substantial proportion of critically ill patients. Studies published by the Society
of Critical Care Medicine have identified sleep disruption and environmental stressors as important
contributing factors. "When sleep-wake cycles are better aligned, patients may experience improved
cognitive recovery and stronger emotional well-being," Dr Singi notes.
More Than Just A Garden

 

Experts emphasise that therapeutic gardens are not intended to replace medical treatment. Instead,
they function as supportive recovery spaces that complement conventional care.
The UK rooftop garden includes accessible pathways, seating areas, rehabilitation spaces, and
greenery specifically designed to accommodate critically ill patients, family members, and healthcare
staff. Such environments can also provide emotional benefits for families coping with the stress of
having a loved one in intensive care.

 

Research published in the Journal of Environmental Psychology has found that access to restorative
natural environments can reduce stress markers and improve emotional resilience among patients
and caregivers alike.

 

Dr Singi believes these spaces offer benefits that extend beyond physical recovery. "Greenery and
sunlight are not treatments by themselves, but they work alongside medical care, creating a calmer

 

and more restorative atmosphere that supports healing, not only of the body but of the mind as
well," she explains.

Could Hospitals In India Adopt Similar Models?
India has witnessed growing interest in patient-centric hospital architecture, particularly after the
Covid-19 pandemic highlighted the importance of mental well-being during hospitalisation. Several
tertiary care hospitals have already begun incorporating rooftop gardens, healing spaces, meditation
areas, and natural light designs into new infrastructure projects.

 

However, widespread implementation may require additional investment, urban planning
considerations, and evidence based design strategies tailored to local healthcare needs. Still, experts
believe that integrating nature into healthcare settings represents a promising direction for the
future.

 

The UK's new rooftop critical care garden reflects a broader shift in healthcare thinking, one that
recognises healing as more than a purely medical process. While medications, surgeries, and
advanced technologies remain essential, growing evidence suggests that sunlight, greenery, and
thoughtfully designed recovery environments may also influence patient outcomes. As hospitals
worldwide explore ways to improve both physical and psychological recovery, nature-based

healthcare spaces could become an increasingly important part of modern medicine. For critically ill
patients, a few moments under open skies may one day be considered as valuable to recovery as any
other supportive therapy.