Climate Change Is Stealing India's Sleep: New Report Reveals Alarming Health Impact
A new report links rising nighttime temperatures to widespread sleep loss in India, increasing risks of heart disease, diabetes, poor immunity, and mental health problems. , Health, Times Now
HealthAuthored by:Ashima Sharda MahindraUpdated Jul 16, 2026, 15:56 ISTA new report links rising nighttime temperatures to widespread sleep loss in India, increasing risks of heart disease, diabetes, poor immunity, and mental health problems. Climate Change Is Disrupting Sleep in India: Hot Nights Raise Health Risks (Pic: AI image)Climate change is no longer just about rising sea levels, melting glaciers, or extreme weather. A new report suggests it is also affecting one of the most important pillars of good health - sleep. As India experiences longer summers, more frequent heatwaves, and warmer nights, experts warn that rising nighttime temperatures are silently disrupting sleep, increasing the risk of chronic diseases and mental health problems. A new analysis by Climate Central has identified India as one of the world's worst-hit regions for climate-related sleep loss. The report found that residents across several parts of the country, particularly in southern India, are losing significant amounts of sleep each year because of hotter nights. India among the global hotspots for sleep lossThe report analysed temperature data alongside sleep research from 1,338 major cities worldwide, including 107 Indian cities. Researchers found that climate change has at least doubled heat-related sleep loss since the early 1970s. Between 2020 and 2025, the average person worldwide lost nearly 56 hours of sleep every year because of high nighttime temperatures. About six of those hours were directly attributed to climate change. However, India's burden is considerably higher. People in many parts of southern India are losing between 78 and 91 hours of sleep annually due to hot nights, with eight to nine hours each year directly linked to climate change. Tamil Nadureports the highest sleep lossAmong Indian states, Tamil Nadu recorded the highest climate-related sleep disruption, with residents losing an estimated 7. 9 additional hours of sleep per person annually because of climate change. Among major cities:Chennai: 93 hours of sleep lost annuallyMumbai: 84 hoursKolkata: 80 hoursBengaluru: Around 8 hours of sleep loss each year directly linked to climate changeOther state-level findings include:Maharashtra: Approximately 76. 3 hours of sleep lost annually, including 5. 8 hours due to climate changeUttar Pradesh: Around 69 hours lost every year, with nearly 4. 9 hours attributed to climate change. Why hot nights make it harder to sleepThe human body naturally lowers its core temperature before bedtime to prepare for restful sleep. Cooler nighttime temperatures help trigger this process, allowing people to enter deeper stages of sleep. When nights remain unusually warm, the body struggles to cool itself, making it harder to fall asleep, stay asleep, and achieve restorative deep sleep. Unlike daytime heat, which can often be managed indoors, warm nights expose people to prolonged heat stress while they are trying to recover physically and mentally. Poor sleep affects your entire bodyHealth experts warn that chronic sleep deprivation is associated with several serious health conditions. Poor sleep has been linked to heart disease, high blood pressure, type 2 diabetes, obesity, weakened immune function, anxiety and depression, memory and concentration problems, and reduced work productivity. Adults generally require 7-9 hours of quality sleep every night to maintain optimal physical and mental health. How to sleep better during hot weatherWhile large-scale climate action remains essential, individuals can take steps to reduce the impact of hot nights:Keep bedrooms cool using fans or air conditioning when possible. Sleep in lightweight, breathable cotton clothing. Stay hydrated throughout the day. Avoid heavy meals, caffeine, and alcohol before bedtime. Use light bedding and improve room ventilation. Close curtains during the day to reduce indoor heat. Ashima Sharda MahindraauthorIs a prolific writer with a varied experience of over two decades of journalism under her belt. She writes passionately about diverse health topics wi. . . View MoreNewsHealthEnd of Article