Lancet Report Highlights Heat Stress and Health Risks in India
Lancet Report Highlights Heat Stress and Health Risks in India
IN · Published Nov 2, 2026
• The '10th Lancet Countdown on Health and Climate Change Report' has flagged significant health risks for India due to climate change. The report highlights that half of the heatwave days experienced in India between 2016 and 2025 were attributable to climate change. Indians faced over 2,600 hours annually of moderate or higher heat stress during outdoor activities, a significant increase compared to the 1990s. Additionally, high night-time temperatures caused an estimated annual loss of 64 hours of sleep between 2021 and
• The report also noted an increase in the transmission potential of diseases like dengue and malaria, with environmentally suitable months for malaria transmission rising by 18-19% compared to 1981-

Impact & Risks

The report underscores the growing health challenges posed by climate change in India. Prolonged heat stress is leading to sleep loss and increased risks of heat-related illnesses. Rising temperatures are also creating favourable conditions for the spread of vector-borne diseases like dengue and malaria. Coastal regions face additional risks from Vibrio bacteria, which can cause gastroenteritis and wound infections. Health officials in Mumbai have already reported increased malaria activity, and anecdotal evidence suggests a rise in heat-related complications, including miscarriages. These findings highlight the urgent need for climate adaptation and mitigation measures to protect public health.

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