Heat Stress During Pregnancy Linked to Adverse Birth Outcomes
Why in News?
A recent nationwide study using data from the National Family Health Survey (NFHS) has found that prolonged exposure to extreme heat during pregnancy is associated with adverse birth outcomes in India, highlighting the growing public health impacts of climate change.
Key Highlights
- Extended exposure to high temperatures during pregnancy significantly increases the likelihood of low birth weight, preterm delivery, and stillbirth.
- The health risks are more severe during the first trimester and disproportionately affect socio-economically vulnerable populations.
- Researchers combined NFHS data with high-resolution climate datasets to examine the relationship between heat exposure and maternal as well as neonatal health outcomes.
- The findings underscore the need to integrate climate adaptation measures into maternal and child healthcare policies.
- The study also highlights heat stress as an emerging public health challenge requiring targeted interventions in climate-vulnerable regions.
Key Concepts
Heat Stress:
Heat stress is a physiological condition that occurs when prolonged exposure to high temperatures overwhelms the body’s ability to regulate heat, increasing the risk of dehydration, heat-related illnesses, and other health complications.
Low Birth Weight (LBW):
A newborn weighing less than 2.5 kg at birth is classified as having low birth weight. Such infants are at greater risk of infections, developmental delays, and higher neonatal mortality.
Preterm Birth:
A preterm birth refers to the delivery of a baby before 37 completed weeks of pregnancy, often leading to increased health complications and the need for specialised neonatal care.
National Family Health Survey (NFHS):
The NFHS is a large-scale, nationally representative survey that collects data on population, health, nutrition, fertility, and socio-economic indicators. It serves as an important evidence base for public health planning and policymaking in India.
Way Forward
India should incorporate heat-risk management into maternal healthcare programmes, strengthen climate-resilient public health infrastructure, expand early warning and awareness systems, and prioritise support for vulnerable communities. These measures will help reduce the health impacts of rising temperatures on pregnant women and improve maternal and neonatal outcomes.