The World Happiness Report 2026 has identified social media as a growing driver of declining well-being among young people, with researchers now warning that its impact is extending beyond mental health into the climate and environmental space.
Released by the University of Oxford Wellbeing Research Centre, the report draws on data from more than 140 countries over 15 years.
It finds a widening generational divide, in which, while happiness levels among adults over 35 remain relatively stable, life satisfaction among people aged 15 to 24 has dropped sharply in countries with high social media use.
The research, led by Jan-Emmanuel De Neve, shows the steepest declines in countries such as the United States, United Kingdom, Canada and Australia, where smartphone adoption surged in the early 2010s.
“We are seeing a generational split that was not evident before,” De Neve said. “Younger users are not just socialising online, they are experiencing the world, including its crises, through these platforms.”
Among the emerging concerns is the role of social media in amplifying climate anxiety, a growing psychological condition, particularly among young people, linked to fear and uncertainty about environmental collapse.
Researchers note that algorithm-driven platforms tend to prioritise emotionally charged content, including extreme weather disasters, droughts, wildfires and environmental degradation. This constant exposure, often stripped of context or solutions, is contributing to a heightened sense of helplessness among young users.
For adolescents already spending hours online, the report suggests that repeated exposure to climate crisis narratives can deepen stress and pessimism about the future, compounding the broader decline in life satisfaction.
Beyond psychological effects, the report points to the overlooked environmental cost of the digital ecosystems powering social media. The growth of platforms such as TikTok, Instagram and YouTube has driven a surge in demand for energy-intensive data centres and cloud infrastructure.
While individual users experience social media as weightless and virtual, the report notes that the global digital economy carries a significant carbon footprint. Video streaming, endless scrolling and algorithmic content delivery all require vast computing power, much of it still reliant on fossil fuel-based energy in several regions.
As youth spend more time online, researchers warn, the environmental cost of digital consumption is quietly rising alongside its psychological toll.
The report also links heavy social media use to reduced physical interaction, not only with people, but with the natural environment. It finds that each additional hour spent online reduces in-person social time by about 25 minutes among adolescents, while also displacing time that could be spent outdoors.
This shift has implications for environmental awareness and behaviour. Studies cited in the report show that direct contact with nature is associated with higher well-being and stronger pro-environmental attitudes. Reduced exposure, by contrast, may weaken emotional connections to ecosystems and lower motivation for climate action.
Researchers warn that these trends risk creating a feedback loop where young people increasingly consume climate-related content online, feel overwhelmed or powerless, and disengage both socially and environmentally.
“There is a growing gap between awareness and agency,” said co-author Lara Aknin. “Young people are highly informed about global challenges like climate change, but the way this information is delivered can leave them feeling unable to act.”
The report emphasises that the relationship is not uniform. In countries such as Japan and South Korea, the link between social media use and declining well-being is weaker, partly due to stronger offline social structures.
It also distinguishes between passive and active use. Messaging friends or organising around shared causes, including climate activism, can support well-being. By contrast, passive consumption of curated or distressing content is associated with the sharpest declines.
The findings add a new dimension to ongoing debates about regulating digital platforms. In addition to calls for stricter age limits, algorithmic transparency and digital literacy, the report suggests integrating environmental considerations into platform design. This could include reducing energy-intensive features, improving transparency around digital carbon footprints, and promoting content that balances awareness with actionable solutions.
The report concludes that social media has reshaped not only how young people connect, but how they perceive global crises, including climate change. In doing so, it is influencing both their mental well-being and their relationship with the environment.
Researchers warn that addressing their impact will require a broader lens, one that treats mental health, technology and the climate crisis as increasingly interconnected challenges.
