Dehydration - The Silent Killer



Did you know?

That a 100kg worker can easily lose 2%
of body weight during a shift in heat
stressed environments? 2% of body
weight equals 2 litres of fluid

“Losing more than 2% of body weight may result in a decreased work output and decreased concentration which in turn may also result in increased work place accidents.”
The following chart best defines the various stages of dehydration symptoms and effects, clearly indicating the increased levels of risk to the human body, culminating in Heat Stroke:




Dehydration symptoms and effects

HYDRATION SAFETY MATRIX
Dehydration Levels
Minor
Initial Stage
Performance Loss
Heat Cramps
Heat Exhaustion
Heat Stroke
% of Body Weight Loss
1%
2%
3%
4%
5%
6%
Fluid Loss
0.75 litres
1.50 litres
2.25 litres
3 litres
3.5-4 litres
5+ litres
Time
1 hours
2-3 hours
3-4 hours
4-5 hours
5-6 hours
7+ hours
Effects & Symptoms
Unnoticed
Loss of endurance, thirsty, feel hot, uncomfortable
Loss of strength and energy, moderate discomfort
Cramps, headaches, extreme discomfort
Heat exhaustion, nausea, fainting
Heat stroke, collapse, unconsciousness











Source: AITP - 2009

Hydrasafe