How the Body Copes with Extreme Heat

Human body’s normal core temperature is 37-38C (98.6 –100.4F).

If it heats up to 39-40C (102.2-104F), the brain tells the muscles to slow down and fatigue sets in. At 40-41C (102.2-105.8F) heat exhaustion is likely – and above 41C the body starts to shut down.

Chemical processes start to be affected, the cells inside the body deteriorate and there is a risk of multiple organ failure.

The body cannot even sweat at this point because blood flow to the skin stops, making it feel cold and clammy.

Heatstroke – which can occur at any temperature over 40C – requires professional medical help and if not treated immediately, chances of survival can be slim.

There are a number of things people can do to help themselves. These include:

• wearing damp clothes which will help lower the body’s temperature
• sticking one’s hands in cold water
• placing fans next to windows as this will draw air from outside, which should be cooler
• wearing looser clothes
• having a lukewarm shower rather than a cold one
• fanning the face rather than other parts of the body