Lancet Report: India Among Top 4 for Heatwave Exposure, 3 Million Heat Deaths Estimated (2016-2023)
How much it matters for each exam
- UPSC7/10
1At a glance
India is among the top four countries globally with the highest heatwave exposure for vulnerable infants and older adults, according to the Lancet Countdown report. Climate change is estimated to have caused almost 3 million heat-related deaths between 2016 and 2023, and 2025 was the second-highest year on record for heatwave exposure for vulnerable groups.
Top Exposure Ranking
India is among the top four countries globally with the highest heatwave exposure for vulnerable infants and older adults.
Call for Emergency Declaration
The Lancet report urges the WHO to declare climate change a global health emergency and centre health in all climate decisions.
2Facts to remember
Tap a card to see the answer. Try to recall it first.
3Detailed analysis
Context / Background
The Lancet Countdown on Health and Climate Change is an annual report tracking the health impacts of climate change. This 10th indicator report highlights the accelerating gap between climate impacts and global response, particularly since the 2015 Paris Agreement. It underscores how health harms have grown faster in the decade since the agreement compared to the previous one.
Core Analysis & Implications
The report provides stark data: India's high ranking alongside major economies indicates its population's extreme vulnerability to rising temperatures. The normalization of exposure to 12.8 heatwave days per older adult and 8.7 days per infant in 2025 shows the pervasive nature of the threat. The attribution of 71.5% of 2023's record 7,10,000 heat deaths to climate change quantifies the direct human cost of inaction, exceeding deaths from diseases like malaria and HIV.
Future Outlook / Way Forward
The report's authors propose concrete steps: formally declaring climate change a global health emergency, creating a new WHO instrument for a coordinated response, and ensuring climate finance is delivered as grants, not loans, to prevent further indebtedness of vulnerable nations. The call is for urgent, fair greenhouse gas emission cuts and sustained investment in health-focused climate science.
4Background GK
Textbook concepts you need to understand this news
- Lancet Countdown
- An international, multidisciplinary collaboration that independently monitors the evolving health profile of climate change, publishing annual reports in The Lancet journal.
- Paris Agreement (2015)
- A legally binding international treaty on climate change adopted by 196 Parties at COP 21. Its goal is to limit global warming to well below 2°C, preferably to 1.5°C, compared to pre-industrial levels.
- Heatwave
- A period of abnormally high temperatures, more than the normal maximum temperature that occurs during the summer season in the North-Western and South-Central parts of India, as defined by the India Meteorological Department (IMD).
5How exams will ask this
- Data: Almost 3 million heat deaths estimated between 2016 and 2023.
- Nodal Body: The Lancet Countdown on Health and Climate Change.
- Ranking: India among top 4 countries with China, US, Russia for heatwave exposure.
Don't make this mistake!
Trap: Confusing the 'Lancet Countdown' report with the 'Lancet Commission' or other reports. Trap: Swapping the percentage of climate-attributable deaths (71.5% in 2023) with the total number of deaths. Trap: Mixing up the heatwave exposure days for older adults (12.8) with infants (8.7).
Write these in mains answers
Climate justice, vulnerability differentials, health-centric climate finance, planetary health
6Practice questions
Pick an answer, then read the explanation.
- Q1Easy
The 'Lancet Countdown on Health and Climate Change' report mentioned in the news is primarily associated with which institution?
Explanation: The article states that the authors of the report are led by those at the U.K.'s University College London. While the report is published in The Lancet, the research collaboration is spearheaded by UCL.
- Q2Hard
Consider the following statements regarding the findings of the Lancet Countdown report:
- 1.India is among the top four countries with the highest heatwave exposure for infants and older adults.
- 2.The year 2024 recorded the highest historical number of heatwave person-days for vulnerable groups.
- 3.Climate change is estimated to have caused nearly 3 million heat deaths between 2016 and 2023.
Which of the statements given above is/are correct?
Explanation: The article states (1) India is listed among top countries including China, the US and Russia; (2) 2024 was a historical high for person-days of heatwaves; and (3) almost 3 million heat deaths occurred between 2016 and 2023 — therefore all three statements are supported, so option D is correct.
- Q3Medium
According to the Lancet Countdown report, what percentage of the estimated 7,10,000 heat deaths in 2023 was driven by climate change?
Explanation: The article explicitly states: "with 71.5% of them driven by climate change" in reference to the 7,10,000 estimated heat deaths in 2023. The other options are close but incorrect distractors.
- Q4Medium
What is a key recommendation made by the Lancet Countdown report authors to address the health impacts of climate change?
Explanation: The article clearly states the authors are "calling for climate change to be formally declared a global health emergency." The report also recommends climate finance as grants, not loans (contradicting option A), and supports investment in health system readiness (contradicting option D).
7All sources
Original28 October 2026 · Read story
Related stories
Stories from the last 30 days on the same topic, state or exams
National Green Hydrogen Mission: Target 5 MMT Annual Production by 2030 with ₹19,744 Crore Outlay
The National Green Hydrogen Mission (NGHM), with a ₹19,744 crore outlay, aims to establish India as a global hub for green hydrogen, targeting 5 million metric tonnes (MMT) of annual production capacity by 2030. It supports domestic electrolyser manufacturing, green hydrogen production, pilot projects, and assured demand and credible certification to decarbonize hard-to-abate sectors like steel, fertilisers and heavy transport, aligning with India's net-zero 2070 goal.
Full form of NGHM: National Green Hydrogen Mission
Climate Risk to Digital Infrastructure: 12% of India's Data Centres Face High Risk by 2050, Crop Losses Up 84% in 2024
Cyclone Arnab highlights the growing vulnerability of India's critical digital infrastructure to climate change. A 2025 assessment by XDI found that over 12% of India's 228 data centres could face high climate-related infrastructure risk by 2050, with damage risk projected to rise by 111% by 2100. This comes amid escalating economic losses from extreme weather, including an 84% increase in cropland affected in 2024.
Data Centres Assessed (XDI 2025): 228
India Releases Guidelines for I-OECMs, 5th Biosafety Report, CBD Handbook and ABS Success Story at COP-17
India has released four strategic publications at the 17th CBD COP to guide biodiversity conservation and benefit-sharing. These include guidelines for recognizing conservation areas beyond protected zones (I-OECMs), a biosafety report, a CBD reference handbook, and a book on India's global leadership in Access and Benefit Sharing (ABS).
Full form of CBD: Convention on Biological Diversity
Lancet Report 2026: Climate Change Attributable to 50% of India's Heatwave Days, 193 Billion Labour Hours Lost Annually
The 2026 Lancet Countdown report quantifies the severe health and economic impacts of climate change in India, attributing half of all heatwave days to human-induced warming. It highlights escalating risks from vector-borne diseases, air pollution, and substantial labour productivity losses, calling for urgent climate-health action.
Report Name: Lancet Countdown on Health and Climate Change 2026
Climate Change: Lancet Countdown Report Warns of 3 Million Heat-Related Deaths (2016-2023) and $1 Trillion Annual Economic Loss
The 10th Lancet Countdown report, released ahead of COP 31, frames climate change as a global health emergency, citing 3 million heat-related deaths from 2016-2023 and an annual economic loss of over $1 trillion. It highlights the severe health and economic impacts, calling for integrated policy responses to build resilience.
Report Name: Lancet Countdown Report (10th edition)
2 sourcesUNEP Report: Global Emissions Cuts Projected at Only 6% by 2035, Far Short of Required 60% Reduction
A UN Environment Programme report warns that current national pledges will cut global greenhouse gas emissions by only 6% by 2035, a mere tenth of the 60% reduction scientists say is needed to limit warming to 1.5°C. The gap highlights a critical shortfall in global climate action, with record-high atmospheric GHG concentrations and insufficient climate finance.
Projected Emissions Cut by 2035: 6% (from current pledges)