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    Home / News / World News / Over 7L annual deaths in India linked to abnormal temperature
    Over 7L annual deaths in India linked to abnormal temperature
    World

    Over 7L annual deaths in India linked to abnormal temperature

    Written by Astha Oriel
    (PTI desk)
    July 08, 2021 | 11:44 pm 3 min read
    Over 7L annual deaths in India linked to abnormal temperature
    A new study found that deaths related to hot temperatures increased between 2000 and 2019 globally

    Nearly 740,000 excess deaths in India annually can be attributed to abnormally hot and cold temperatures related to climate change, according to a study published in The Lancet Planetary Health journal. An international team, led by researchers at Monash University in Australia, found that globally more than five million extra deaths a year can be attributed to non-optimal temperatures.

    Global warming will make mortality figures worse in future: Study

    The study published on Wednesday found that deaths related to hot temperatures increased in all regions from 2000 to 2019, indicating that global warming due to climate change will make this mortality figure worse in the future.

    Global temperatures rose by 0.26 degrees celsius between 2000-2019

    In India, the number of deaths per year linked with abnormally cold temperatures is 655,400, while the number of deaths associated with high temperatures is 83,700, according to the researchers. The team looked at mortality and temperature data across the world from 2000 to 2019, a period when global temperatures rose by 0.26 degrees Celsius per decade.

    9.43% global deaths could be attributed to cold, hot temperatures

    The study, the first to definitively link non-optimal temperatures to annual increases in mortality, found 9.43% of global deaths could be attributed to cold and hot temperatures. This equates to 74 excess deaths for every 100,000 people, with most deaths caused by cold exposure.

    Heat-related mortality would be continuing to increase: Researcher

    Global warming may "slightly reduce the number of temperature-related deaths, largely because of the lessening in cold-related mortality," said Professor Yuming Guo from the Monash University. "However in the long-term climate change is expected to increase the mortality burden because heat-related mortality would be continuing to increase," Guo said. The data shows geographic differences in the impact of non-optimal temperatures on mortality.

    Eastern Europe, Sub-Saharan Africa have highest temperature-related excess deaths

    The data shows that Eastern Europe and Sub-Saharan Africa having the highest heat and cold-related excess death rates. Cold-related deaths decreased 0.51% from 2000 to 2019, while heat-related deaths increased 0.21%, leading to a reduction in net mortality due to cold and hot temperatures.

    Asia contributed to more than half of abnormal temperature-related deaths

    Of the global deaths attributed to abnormal cold and heat, the study found more than half occurred in Asia, particularly in East and South Asia. Europe had the highest excess death rates per 100,000 due to heat exposure, according to the researchers. Sub-Saharan Africa had the highest death rates per 100,000 due to exposure to cold, they said.

    First study to give global overview of abnormal temperature-related mortality

    The largest decline of net mortality occurred in Southeast Asia while there was a temporal increase in South Asia and Europe. Previous studies had looked at temperature-related mortality within a single country or region. "This is the first study to get a global overview of mortality due to non-optimal temperature conditions between 2000 and 2019, the hottest period since the Pre-Industrial era," Guo said.

    Study used data from 43 countries across five continents

    The researchers used data from 43 countries across five continents with different climates, socioeconomic and demographic conditions, and differing infrastructure and public health services levels. "The study had a large and varied sample size, unlike previous studies," Guo added.

    Previous study estimated 7.7% deaths due to cold, hot temperatures

    The mortality data from this study is significantly higher than the second-largest study published in 2015, conducted across 13 countries/regions, which estimated 7.7% of deaths were related to cold and hot temperatures. "The importance of taking data from all points of the globe was to get a more accurate understanding of the real impact of non-optimal temperatures under climate change," Guo said.

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