Tokyo, Japan (Enmaeya News) — Intensifying summer heat linked to climate change is creating serious health risks worldwide, with new research from Japan warning of heightened dangers for pregnant women and children.
A study by the Institute of Science at Tokyo University examined about 6,900 cases of placental abruption reported between 2011 and 2020 across 11 Japanese regions. Researchers found that the risk of placental abruption — a severe pregnancy complication — rose 20% the day after extreme heat, measured by Wet-Bulb Globe Temperature, a global heat stress index.
For expectant mothers with hypertensive disorders, the risk surged 50%, while those with fetal growth restriction faced a 40% increase. Such conditions are recognized risk factors in pregnancy worldwide.
The same research group previously reported that people with diabetes were 60% more likely to be hospitalized for dangerous blood sugar swings during heatwaves.
Children are also at risk, with asthma-related hospital admissions increasing 20% after extreme heat exposure — and up to 30% for those under 14. Projections suggest such hospitalizations could more than quadruple globally by the 2090s as climate change and demographic shifts intensify heat impacts.
Public health agencies worldwide are urging vulnerable groups — including pregnant women, children and people with chronic conditions — to monitor heat stress levels, stay hydrated, seek cool environments, and avoid prolonged sun exposure.
