Extreme heat causes record deaths in Spain and diverse health risks

extreme heat heatwave mortality public health climate change medical diagnoses

Extreme heatwaves are causing significant mortality and a wide range of health complications. In Spain, the Daily Mortality Monitoring system (MoMo) reports that over 5,000 people have died from heat-related causes between May 15 and August 24, 2026. This figure sets a new record, surpassing previous highs in 2022 and 2025. The impact is heavily concentrated among older populations, with 97% of these deaths occurring in individuals aged 65 and older.

Beyond heatstroke and dehydration, a study published in Science Advances highlights that extreme temperatures are linked to more than 30 different medical diagnoses. Analyzing nearly one million emergency room visits in Chicago from 2011 to 2023, researchers identified significant increases in conditions such as multiple sclerosis flare-ups, acute kidney failure, skin rashes, and mental or behavioral disorders. The research also suggests a correlation between extreme heat and an increase in physical trauma, including assaults and firearm-related incidents. Experts warn that focusing only on well-known heat illnesses may lead to underestimating the true public health burden and overlooking vulnerable communities, particularly in urban areas affected by the heat island effect.

Entities

Chicago · Daily Mortality Monitoring System · Hyojung Jang · Northwestern University · Science Advances · Spain

Claims

What the coverage asserts, and how many sources carry each claim.

[● 7 SOURCES] Heat-related diagnoses include skin rashes, acute kidney failure, multiple sclerosis flare-ups, mental disorders, and insect bites. de.euronews.com · es.euronews.com · hu.euronews.com · it.euronews.com · www.mediafax.ro · +2 more
[● 3 SOURCES] Of the heat-related deaths in Spain, 3,145 were individuals over the age of 85. www.diariodemallorca.es · www.elperiodicoextremadura.com · www.laopinioncoruna.es
[● 2 SOURCES] Extreme heat is linked to increased accidental and violent trauma, including assaults and firearm incidents. www.mediafax.ro · www.euronews.com
[● 7 SOURCES] The study analyzed 1,803 diagnoses from nearly one million emergency visits in Chicago between May and September from 2011 to 2023. de.euronews.com · es.euronews.com · hu.euronews.com · it.euronews.com · www.mediafax.ro · +2 more
[● 3 SOURCES] Spain recorded 5,030 deaths attributable to extreme heat between May 15 and August 24, 2026. www.diariodemallorca.es · www.elperiodicoextremadura.com · www.laopinioncoruna.es
[● 7 SOURCES] Researchers identified over 30 medical diagnoses associated with extreme heat that are often overlooked by public health tracking. de.euronews.com · es.euronews.com · hu.euronews.com · it.euronews.com · www.mediafax.ro · +2 more