BLOGS

MENTAL HEALTH AWARENESS WEEK (UK): 11–17 MAY 2026

TEACHER BRIEFING: SUPPORTING YOUNG MINDS THROUGH PLAY: THE EVIDENCE

Evidence-based studies show time spent outside gives children space to relax, reset, and connect with the world around them.  This helps reduce stress, boost mood, and build confidence. 

This Teacher Briefing provides the evidence behind how well-designed outdoor play settings can support safeguarding at your school. This selection of evidence-based studies and reviews demonstrate outdoor play improves children’s mental health. The evidence provides interesting reading and can also be used to support your schools bid for funding to invest in its outdoor space. 

UMBRELLA REVIEW OF OUTDOOR PLAY AND HEALTH (2024) [1]

Children underneath a Den from our Den Building Kit on a Nottinghamshire school playground

71% of observations showed a positive association between outdoor play and mental health. 

Strong evidence that outdoor play benefits:

  • Emotional wellbeing
  • Social health
  • Psychological functioning

Why This is Important:

Umbrella reviews are among the highest levels of evidence 

HOW NATURE EXPOSURE IMPROVES MENTAL HEALTH IN YOUNG PEOPLE [2] [3]

Outdoor time reduces cortisol (stress hormone) and improves emotional wellbeing.

Even 10–30 minutes outdoors can: 

  • Lower stress 
  • Reduce negative mood 
  • Decrease rumination (repetitive negative thinking) 
  • Give brain and cognition benefits 

Outdoor Environments are Linked To:

  • Better attention and concentration 
  • Improved cognitive development in adolescents 
  • Walking in nature reduces activity in brain areas linked to mental illness risk 

CHILD-FOCUSED RESEARCH SUMMARIES (2025) [4]

Outdoor play is associated with:

Anxiety and Depression symptoms

Mood and Emotional Wellbeing

Focus and Reduced Hyperactivity

Sleep Quality

Social Skills and Peer Connection

INTERNATIONAL PUBLIC HEALTH PERSPECTIVE – UNICEF REPORT (2025) [5]

Outdoor play is hugely important for: 

  • Mental health
  • Emotional development
  • Learning outcomes

Growing concern: children are spending less time outdoors, despite strong evidence of benefits

ADDITIONAL EVIDENCE (FROM STUDIES & META-ANALYSES) [6]

Meta-analysis: exposure to nature produces small but significant reductions in depressive mood 

Outdoor play linked to:

  • Greater creativity
  • Better emotional regulation

KEY TAKEAWAY (SYNTHESIS)

Across systematic reviews, experimental studies, and global reports, the evidence consistently shows that outdoor play:

  • Reduces stress, anxiety, and depressive symptoms
  • Improves mood, attention, and cognitive function
  • Enhances social interaction and emotional development
  • Supports overall psychological wellbeing

THE STRONGEST CONCLUSION:

Outdoor play is a low-cost, evidence-based intervention that supports children’s mental health across multiple domains.