The subtle yet insidious ways climate change affects mental health

A review of 57 studies published in *Nature Mental Health* found that slow-moving environmental changes—such as drought, shifting seasons, and erratic rainfall—are linked to depression, anxiety, and psychological distress. Participants reported persistent worry, grief, and frustration over family, community, and future stability. Lead author Sarah Lowe, an associate professor at Yale School of Public Health, noted these gradual changes contribute to negative emotions, suicidality, and generalized distress, even without direct disaster exposure. In India, 70-year-old Saibi Takavade from Shirdhon village described worsening stress as summers lengthen and rains become unpredictable, disrupting her ability to track seasons. Similarly, 67-year-old farmer Rukmini Yadav lost confidence in seasonal predictability, citing disrupted planting cycles. Researchers emphasize that climate stress often builds incrementally, rather than through single traumatic events. A 2025 analysis of U.S. crisis text conversations in *Journal of Climate Change and Health* revealed climate-related anxiety, helplessness, and despair among users. Lead author Jennifer Runkle, an environmental epidemiologist at North Carolina State University, explained that repeated exposure to climate stressors—like extreme heat or air pollution—triggers chronic stress responses, affecting hormones, inflammation, and neurological pathways linked to depression. The study also found that unpredictable environmental patterns, such as erratic rainfall or temperature shifts, create instability and loss of control. Even those not directly affected by disasters experience heightened distress from disrupted routines. Runkle noted that these psychological effects compound physical health risks, worsening sleep and physiological regulation over time. Younger populations are not spared; reviews of global studies highlight climate anxiety among youth, driven by concerns about inherited environmental degradation. The findings underscore the need for public health interventions addressing chronic climate-related stress, beyond immediate disaster responses.