Study Reveals High Levels of Heat Impact Foetuses and Infants Up to Two Years Old

Research conducted in The Gambia suggests that high heat levels can impact foetal and infant growth. The study, involving over 600 pregnancies, indicates that a rise in average daily temperature during the first trimester correlates with reduced birth weight. These findings were published in The Lancet Planetary Health journal.

The study tracked 668 infants, split evenly between boys and girls, for their first 1,000 days. At birth, 66 infants weighed less than 2.5 kilograms, classifying them as having low birth weight. Additionally, about a third of the infants were small for gestational age, and nine were born prematurely.

Impact of Heat Stress on Infant Development

Heat stress not only affects foetuses but also continues to influence infants up to two years old. Those exposed to higher temperatures had lower weights and heights for their age. Infants aged 6-18 months who experienced significant heat stress in the previous three months were most affected.

The research team, led by experts from the London School of Hygiene and Tropical Medicine (LSHTM), emphasised the need to address climate change's impact on health. They highlighted that heat exposure must be considered in public health strategies as climate change worsens.

Broader Implications of Climate Change

Ana Bonell, lead author and assistant professor at the Medical Research Council Unit The Gambia, LSHTM, stated: "Our study demonstrates that the intersecting crises of climate change, food insecurity, and undernutrition are disproportionately affecting the most vulnerable, including young children."

The data was collected during a trial in West Kiang, The Gambia, from January 2010 to February 2015. This research builds on earlier evidence showing the first trimester's vulnerability to heat exposure.

Further investigation is necessary to understand heat stress impacts beyond The Gambia. Researchers call for more studies in different regions to explore these health effects comprehensively.