For subscribers

How much heat can the human body stand?

The hottest June ever and a record-breaking start to July should be a wake-up call. We weren’t built for this.

Sign up now: Get ST's newsletters delivered to your inbox

Heat can kill because our bodies are made of cells contained with membranes that will, if hot enough, melt.

Heat can kill because our bodies are made of cells contained with membranes that will, if hot enough, melt.

PHOTO: REUTERS

F.D. Flam

Follow topic:

The June that just ended was the Earth’s hottest recorded – ever. And

the first week of July

saw the trend continue. The surging summer temperatures made me wonder: Just how much heat can the human body stand?

Deaths from heat are pretty common and, as the world heats up, may become more so if we do not develop a plan for extreme heat days, like the kind of warning system that usually comes before a major hurricane or blizzard. In 2019, about 469,000 people worldwide died from overheating, according to a paper published in 2021 in The Lancet.

See more on