WeeklySA_AdminSOLITUDE: A major international review involving more than 10 million people suggests that spending time in nature — whether walking in a park, gardening or simply sitting among trees — can significantly improve mental well-being…
By Sayan Tribedi
A growing body of scientific evidence suggests that one of the most effective ways to improve mental health may be as simple as stepping outside.
A landmark international review has found that spending time in natural environments can significantly reduce stress, anxiety and depression while boosting relaxation and overall mood.
The study, published in Nature Human Behaviour, analysed nearly 4 000 individual studies involving more than 10 million participants, making it one of the most comprehensive examinations yet of the relationship between nature and mental well-being.
Researchers found a consistent pattern across diverse populations: people who engaged in nature-based activities such as walking in parks, gardening, forest bathing or simply spending time outdoors reported markedly better mental health outcomes than those who did not.
Mental health disorders remain a growing global challenge, affecting more than one billion people worldwide. In response, researchers have increasingly turned their attention to nature-based interventions as a low-cost, accessible complement to conventional treatments.
As mental health challenges continue to rise worldwide, researchers say
something as simple as a walk among es or beside a river could
provide a surprisingly powerful boost to emotional well-being…
The findings revealed substantial reductions in negative emotional states. Participants exposed to natural settings experienced significantly lower levels of stress, anxiety and depression, with the strongest improvements recorded in anxiety and depressive symptoms. Researchers also observed measurable physiological benefits, including lower heart rates, suggesting that time spent in green spaces can help calm both the mind and body.
Beyond reducing negative emotions, nature also appeared to enhance positive feelings. Participants reported improved moods and significantly higher levels of relaxation after spending time outdoors. The study found that people consistently left nature-based activities feeling more refreshed, optimistic and emotionally balanced.
However, the researchers caution against viewing nature as a standalone cure. Most of the studies compared time spent in nature with passive activities or no intervention at all, rather than with established therapies such as counselling, structured exercise programmes or medical treatment.
As a result, while the evidence strongly suggests that nature is beneficial, it remains unclear how it compares with other proven mental health interventions.
The researchers also noted that the studies examined a wide range of activities, from short park visits to extended wilderness retreats, making it difficult to determine which specific approaches deliver the greatest benefits.
Additionally, much of the available research originates from wealthier nations, with relatively little data from Africa and South America.
Despite these limitations, the overall message remains encouraging. The authors conclude that spending time in nature offers clear mental health benefits and could serve as an affordable, widely accessible supplement to traditional care.
They argue that future research should compare nature-based interventions directly with other therapies to better understand their role in promoting mental well-being.
For now, the takeaway is refreshingly simple: in a world increasingly defined by screens, stress and constant demands on attention, a walk in the park may be more than a pleasant escape — it could be an investment in better mental health.
