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4 August 2026

Impact of heat stress on pregnancy in India

This research provides empirical data on the intersection of climate change and public health, specifically impacting vulnerable populations, which is highly relevant for GS1 population issues and GS3 disaster management.

1 min read Day 2 of 2 2 questions 2 prelims

Notes

  • A study by the University of Queensland–IIT Delhi Academy of Research analysed 209,266 births between 2015 and 2020 using NFHS-5 data.
  • The research utilized the 'India Heat Index', which accounts for humidity, wind, and radiation, rather than just average temperature.
  • Findings indicate that extreme heat exposure is linked to adverse birth outcomes: first-trimester exposure is linked to preterm birth, second-trimester to low birth weight, and third-trimester to stillbirths.
  • Vulnerable groups include mothers with low BMI (<18.5), lower education levels, and those from lower wealth quintiles.
  • Biological mechanisms identified include increased maternal core body temperature affecting the foetus and dehydration reducing uterine blood flow.
  • Urban residents showed higher rates of low birth weight compared to rural counterparts.
  • Mountainous, humid subtropical, and arid climatic zones showed significant associations between heat stress and adverse outcomes.

Part of a longer story

This is day 2 of 2 in Impact of heat stress on maternal and birth health in India, which has been running since 22 July 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

Questions

  1. Examine the link between climate change-induced heat stress and maternal health outcomes in India. How does the 'India Heat Index' provide a more comprehensive assessment of health risks compared to traditional temperature metrics? 150 words
    Attempt this — 150 words in 8 min
    0 / 150 words 8:00
  2. The intersection of environmental stressors and socio-economic vulnerability poses a significant challenge to public health in India. Discuss this in the context of recent findings on heat stress and pregnancy outcomes, and suggest policy interventions to mitigate these risks for vulnerable populations. 250 words
    Attempt this — 250 words in 11 min
    0 / 250 words 11:00

Prelims

  1. According to the study on heat stress and pregnancy in India, which trimester of pregnancy is most strongly associated with an increased risk of stillbirth due to extreme heat exposure?

  2. The 'India Heat Index' used in recent research to assess pregnancy outcomes incorporates which of the following factors in addition to temperature?

Syllabus

Topics

Sources

250words.in · https://250words.in/daily/2026-08-04/impact-of-heat-stress-on-pregnancy-in-india