A small Brazilian pilot study found sizable reductions in anxiety, depression and stress after university students completed structured two-hour nature sessions, adding to research examining whether deliberate exposure to natural environments can support mental well-being.
By yourNEWS Media Newsroom.
A structured form of nature immersion known as forest bathing produced substantial improvements in self-reported anxiety, depression and stress among university students in a small Brazilian pilot study, highlighting growing scientific interest in the relationship between natural environments and psychological health.
Researchers at Sao Paulo State University followed 36 students during a semester in which participants completed three organized forest bathing sessions in urban parks.
By the end of the intervention, anxiety scores had fallen 48.4%, while depression declined 35.4% and stress dropped 33.5%.
The findings are notable because the intervention involved no medication or intensive clinical treatment. Instead, participants spent approximately two hours deliberately engaging with natural surroundings through a sequence of mindfulness, movement and relaxation exercises.
Because the research was a small pilot study, however, the results should not be interpreted as proof that forest bathing can treat anxiety disorders or clinical depression. Larger controlled studies would be needed to determine how much of the improvement was caused specifically by the nature intervention and how consistently similar results could be reproduced.
Still, the magnitude of the changes has drawn attention to a practice rooted in something considerably older than modern mental health care: spending sustained, attentive time in natural environments.
The Intervention Went Far Beyond Taking a Walk
The researchers did not simply instruct participants to visit a park.
Each session followed a five-part structure intended to shift attention away from everyday stimulation and toward the immediate physical environment.
Participants began with green mindfulness meditation designed to engage sight, hearing, smell, touch and other sensory awareness.
They then took slow walks while deliberately observing details such as colors, textures, plants and other natural features rather than treating the activity primarily as exercise.
The sessions also incorporated low-intensity grounding activities involving physical contact with natural surfaces, mindful eating in outdoor picnic areas and guided relaxation using the surrounding environment.
Together, the exercises created a two-hour period in which students intentionally disengaged from phones, academic pressure and other sources of cognitive stimulation.
Researchers reported large to very large effect sizes in several psychological measures and observed improvements in emotional stability and resilience.
That distinction is important because the proposed benefit of forest bathing is not simply physical activity.
The practice emphasizes slowing down, directing attention outward and allowing the sensory characteristics of a natural environment to dominate awareness.
More Natural Parks Produced Better Results
One of the study’s most interesting findings involved where the sessions occurred.
Participants experienced stronger psychological benefits in parks containing denser native vegetation, natural water features and fewer artificial structures than in more manicured urban green spaces.
The finding suggests that simply adding grass, trees or landscaped gardens to a built environment may not provide the same experience as spending time in a more complex natural setting.
That observation is consistent with Attention Restoration Theory, which proposes that natural environments allow the brain’s heavily used directed-attention systems to recover.
Modern life frequently requires prolonged concentration on screens, work, school, traffic, notifications and other competing demands. Natural settings, by contrast, can attract attention without requiring the same sustained cognitive effort.
Forests also expose visitors to changing light, irregular shapes, moving leaves, water, birds and other sensory information that differs significantly from the repetitive visual and auditory environment of many indoor spaces.
Researchers have additionally examined phytoncides, volatile compounds released by trees and other plants, for potential effects on stress physiology and immune activity.
Those mechanisms remain areas of continuing research and should not be treated as evidence that merely breathing forest air cures psychological illness.
A Growing Question About Modern Environments
The broader significance of the Brazilian study may be less about forests functioning as medicine and more about whether modern lifestyles are depriving people of environmental conditions that historically formed a routine part of human life.
Many adults now spend most of their time indoors, often moving between homes, vehicles, offices and commercial buildings while simultaneously spending hours looking at electronic screens.
For younger adults and university students, that pattern can combine with academic pressure, disrupted sleep, social-media exposure and reduced physical activity.
The researchers’ findings add to a growing body of work investigating whether routine access to natural environments can counter some of those pressures.
That does not mean anxiety and depression are simply consequences of inadequate time outdoors.
Mental health conditions are complex and can involve genetics, trauma, life circumstances, physical illness, neurobiology, substance use, sleep, social isolation and numerous other factors.
Nature exposure therefore should not be viewed as a replacement for psychotherapy, medication or other clinically appropriate treatment when those interventions are needed.
Its potential value may instead lie in providing an inexpensive, low-risk complement to broader mental health care and prevention.
Pandemic-Era Changes Intensified the Question
The relevance of nature exposure became particularly visible after the COVID-19 pandemic dramatically altered everyday routines.
Large numbers of people experienced increased social isolation, sedentary behavior, screen time and reduced access to recreational spaces.
A separate large survey in Sao Paulo state found that more than half of adults reported frequent anxiety or stress after the pandemic began, with younger adults among those reporting the greatest burden.
Those behavioral changes created conditions almost opposite to the forest bathing intervention.
Instead of prolonged indoor time and constant digital engagement, participants were encouraged to move slowly, observe their surroundings, engage their senses and spend uninterrupted time outdoors.
The contrast has contributed to growing interest among researchers and institutions in whether relatively simple environmental interventions could help support student and public mental health.
Nature Exposure Does Not Have to Mean Wilderness
The study’s protocol involved organized two-hour sessions, but researchers examining nature exposure more broadly have reported benefits from much shorter periods outdoors.
Other research has suggested that even approximately 15 to 20 minutes spent relaxing in a natural setting may produce measurable changes in mood or stress indicators.
That makes the basic principles relatively accessible even for people who do not live near forests.
A neighborhood park containing mature trees, a wooded trail, a botanical garden or a quiet natural area may provide opportunities for intentional outdoor time.
The quality of the environment may matter, however.
The Brazilian findings suggest that spaces with greater ecological complexity could provide stronger restorative effects than heavily constructed settings containing only limited vegetation.
How to Practice Forest Bathing
Forest bathing does not require strenuous hiking or specialized equipment.
The emphasis is on attention rather than athletic performance.
A practical session can begin by putting away electronic devices and moving slowly through a natural setting without focusing on distance, pace or calories burned.
Attention can then be directed toward individual sensory experiences: the movement of branches, variations in light, birds or insects, the texture of bark, the smell of soil or vegetation and the feeling of air against the skin.
Periods of sitting quietly can be alternated with slow walking.
Some practitioners incorporate mindful eating outdoors or gentle stretching and relaxation.
The Brazilian protocol also included grounding exercises involving direct physical contact with natural surfaces. People choosing to walk barefoot or sit directly on the ground should use ordinary precautions regarding sharp objects, insects, extreme temperatures and other environmental hazards.
Consistency may ultimately be more practical than occasional lengthy outings.
Short, regular periods in quality green spaces can be easier to maintain than infrequent two-hour sessions.
An Accessible Addition to Mental Health Support
The study’s strongest contribution may be demonstrating that a highly structured nature intervention can be evaluated using the same psychological measures researchers apply to other approaches.
Among the 36 students who participated, anxiety fell nearly by half, while depression and stress also declined substantially.
Those numbers are encouraging but remain preliminary because the study was small and does not establish forest bathing as a clinical treatment.
The practice nevertheless carries characteristics that make it attractive as a public-health tool: it can be inexpensive, requires little specialized infrastructure and can potentially be incorporated into schools, universities, workplaces and community programs.
“Forest bathing is important because it reduces stress and improves mood through mindful connection with nature,” BrightU.AI’s Enoch said. “It counteracts the negative effects of excessive indoor time by lowering cortisol and enhancing beneficial hormones. This practice reawakens our innate biological instincts, promoting overall well-being.”
Claims about specific hormonal effects require continued scientific evaluation, but the broader principle is consistent with the emerging research: deliberate engagement with natural settings appears capable of influencing psychological well-being.
The Brazilian pilot study does not establish forests as a substitute for medical or psychiatric care.
It does, however, raise a more practical question about whether regular contact with nature should be treated as a basic component of healthy living rather than an occasional recreational luxury.
For people surrounded by screens, buildings and constant stimulation, the intervention studied was strikingly simple: step into a natural environment, slow down, pay attention and remain there long enough for the mind to disengage from the demands waiting elsewhere.
Source: Natural News
Watch and learn about forest bathing and attention restoration theory.
This video is from the Cultivated Change channel on Brighteon.com.
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