Killer heat hit young harder than elderly: A Mexico study

At higher temperatures and humidity, the heat kills far more young people under 35 than those older than 50, says latest research

A surprising study of temperature-related deaths in Mexico upends conventional thinking about what age group is hit hardest by heat. Researchers found at higher temperatures and humidity, the heat kills far more young people under 35 than those older than 50.

For decades, health and weather experts have warned that the elderly and the youngest children were most vulnerable in heat waves. But this study looking at all deaths in Mexico from 1998 to 2019 shows that when the combination of humidity and temperature reach uncomfortable levels, such as the mid to upper 80s Fahrenheit (around 30 degrees Celsius) and 50% relative humidity, there were nearly 32 temperature-related deaths of people 35 years old for every temperature-related death of someone 50 and older.