A new study has revealed a strong connection between extreme heat, high humidity, and an increased risk of depression across India. Researchers warn that the combination of high temperatures and moisture levels, measured using the wet bulb temperature, can significantly affect mental well-being.

Unlike past research that looked only at temperature, this study emphasizes the importance of combining heat and humidity to assess mental health impacts in Indian communities.

The findings suggest that individuals in regions experiencing more frequent heatwaves and humid conditions are more vulnerable to symptoms of depression, especially in low-income or underserved areas.

The study also recognized the role of India’s District Mental Health Program (DMHP) in reducing the mental health burden caused by climate stress. Areas with active DMHP support reported fewer depression cases during extreme weather events.

Experts advocate for better climate adaptation strategies within mental health services, especially as climate change is expected to intensify these conditions.

Key Findings of the Study:

• Higher wet bulb temperatures linked to increased depression rates
• Climate vulnerability is higher in densely populated and low-income regions
• Young adults and elderly are more affected by thermal stress
• DMHP presence reduces mental health risks during heatwaves
• Urban heat islands worsen humidity exposure and psychological impact

Recommendations

• Expand coverage of the District Mental Health Program across India
• Develop public awareness campaigns on heat-related mental health
• Integrate weather-based mental health alerts into early warning systems
• Design urban cooling solutions to combat heat islands
• Train health workers on climate-mental health linkages

Sources / Scientific References:

• “The relationship between wet-bulb temperature and mental health” – Journal of Environmental Health, 2025
• Ministry of Health and Family Welfare, Government of India
• District Mental Health Programme Reports – National Health Mission
• Indian Meteorological Department – Heat and Humidity Index
• World Health Organization – Mental Health and Climate Change