Important Health British Columbia

Heat exposure during pregnancy, early childhood may affect brain development, new study finds

Heat may have lasting effects on brain development for children, a new study suggests.

Heat exposure during pregnancy, early childhood may affect brain development, new study finds
Text to audio Audio version available

Heat may have lasting effects on brain development for children, a new study suggests.

Heat may have lasting effects on brain development for children, a new study suggests. According to research published in the Environment International journal, exposure to high temperatures during the early stages of life, including pregnancy, is linked to slower growth of the thalamus – a region in the brain involved in processing information – later in childhood. The study, first published online in June, was led by researchers from the Barcelona Institute for Global Health (ISGlobal).

Experts say the brain develops rapidly during pregnancy and the first years of life, making it especially sensitive to environmental factors. The findings raise concerns about the impact of extreme temperatures on children’s health as a result of climate change, according to the report. “With global temperatures continuing to rise, measures to reduce heat exposure during pregnancy and early infancy could play an important role in protecting children’s brain development,” Mònica Guxens, a co-ordinator of the study and a research professor at ISGlobal, said in a press release shared by the institute Monday.

The study examined more than 3,200 children from the Netherlands’ Generation R research project, a population-based prospective cohort study. According to Laura Granés, a researcher and co-

Source and reference

author of the study, researchers obtained weekly estimates of outdoor temperatures during pregnancy, as well as monthly estimates of temperatures from birth to eight-and-a-half years of age at each child’s residence. “We wanted to examine whether exposure to heat or cold from conception to 8.5 years of age was associated with changes in brain development during late childhood and adolescence, and to identify the periods when the brain is most vulnerable,” Granés said in the press release. Researchers later analyzed two separate MRI scans of participants conducted at 10 and 14 years of age, allowing them to measure the volume of 11 brain structures over time and determine whether they were linked to earlier exposure of heat or cold, she added. What part of the brain was impacted? Researchers found that the thalamus was the only region in the brain that consistently showed a connection...

Read original source
Published
Jul 16, 2026
Updated
Jul 16, 2026
Source
Ctv News
Category
Health
Read time
2 min
Key facts

Key facts

SectionHealth
Open
SourceCtv News
Open
PublishedJul 16, 2026
UpdatedJul 16, 2026

Why this matters locally

This health story matters locally because it may affect readers, businesses, commuters, families, or public services in British Columbia.

Local impact

BC Post links this item to British Columbia coverage so readers can follow related city updates, weather, traffic, events, and category news in one place.

Timeline

PublishedJul 16, 2026, 11:24 AMThis story was published by BC Post.
ImportedJul 16, 2026, 2:01 PMThe item entered the BC Post source pipeline.
Transparency

Source and credit

BC Post may summarize, organize, and add local context for reader clarity. Original reporting remains with the listed publisher.

Ctv News Published Jul 16, 2026 Imported Jul 16, 2026
Read Original Source
Ctv News Jul 16, 2026
Read Original Source