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Fans Trick Brain in Heatwave: Doctor's Warning
3 Jul
Summary
- Electric fans may worsen heat exhaustion in temperatures above 32°C.
- Cooling relies on water evaporation from skin for effective temperature reduction.
- UKHSA warns heat spell could impact health and social care services.
With temperatures expected to climb, a surprising warning has emerged regarding the use of electric fans during heatwaves. A medical professional explained that in temperatures exceeding 32 degrees Celsius, electric fans do not actually cool the body's core.
Instead, fans stimulate skin sensors, creating a false sensation of coolness and potentially causing the body to reduce natural sweating. This can lead to approaching heat exhaustion, especially when the core temperature is not being reduced. The expert advises that wetting the skin before using a fan enhances cooling through evaporation, a method proven effective even in extreme heat.
The UK Health Security Agency has issued alerts about the potential impact of the current hot spell on health and social care services. This follows critical incidents declared by many services during the previous heatwave.
The Met Office predicts high pressure building across most of the UK, leading to warm or very warm conditions, particularly in England and Wales. While some areas may see temperatures approach the high 20s or 30 degrees Celsius, the likelihood of extreme heat and humidity matching previous records is currently considered low.
