Heatwaves expose a gap in public health strategy. Women face disproportionate risks during extreme heat events, yet protection efforts rarely account for gender-specific vulnerabilities.
Pregnancy amplifies heat stress on the body. Pregnant women experience higher core temperatures and reduced cooling efficiency, raising risks for complications including preterm labor and low birth weight. Hormonal fluctuations across the menstrual cycle also affect thermoregulation, making some women more vulnerable to heat-related illness during certain phases.
Medication compounds the problem. Women take hormonal contraceptives and hormone replacement therapy at higher rates than men take equivalent medications, both of which impair the body's ability to shed heat. Certain antidepressants and antihistamines, also more commonly prescribed to women, similarly interfere with sweating and cooling mechanisms.
Social factors matter too. Women often wear clothing that restricts airflow more than men's typical wear. Caregiving responsibilities, disproportionately shouldered by women, mean they prioritize others' cooling over their own during heat events. Older women living alone face particular isolation risks when extreme temperatures strike.
Health systems have largely ignored these realities. Emergency heatwave guidance typically presents generic advice without acknowledging pregnancy, menopause, or medication interactions. Public campaigns fail to mention which women face elevated risk.
Experts call for integrated heat-health action plans that recognize gender differences. This includes updating clinical guidelines for pregnant women, improving medication reviews before hot seasons, and targeted outreach to at-risk populations. Better data collection on heat-related hospitalizations by gender will reveal the true scope of the problem.
As global temperatures climb, understanding who suffers most from extreme heat becomes essential to public health planning. Women need protection strategies built specifically for their bodies and circumstances, not afterthought considerations in generic heatwave response.