Extreme temperatures: How much heat can humans tolerate??
These are the greatest dangers in the heat
Hot summer temperatures can quickly become dangerous for your health. Which health risks you should know in the heat and how you can protect yourself, you can see in the video.
Many people around the world are currently suffering from an extreme heat wave. Because the body can only withstand certain temperatures.
Berlin. 43 degrees in Cyprus, 44 degrees in Greece, almost 50 degrees in North America: Temperatures are currently breaking records – with dramatic consequences. In Lytton, Canada, a forest fire nearly destroyed an entire village. In British Columbia alone, between last Friday and Wednesday, just under 500 dead recorded in connection with the heat wave.
Experts The experts reckon that extreme weather conditions are increasingly causing problems for nature and mankind. But how hot can it actually get until it becomes life-threatening? We answer the most important questions.
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How much heat can the body take?
How much heat a person can tolerate depends on various factors, for example, the physical constitution, but also a matter of habituation. However, researchers at the University of Hawaii have identified a critical temperature threshold. To this end, scientists in a study evaluated data on deaths during various Heat waves from. Your result: From outside temperatures above 37 degrees it becomes dangerous – with high humidity even at lower temperatures.
This is because the human organism strives to keep its temperature at a constant 37 degrees Celsius so that vital metabolic processes can occur continuously. This temperature may vary only slightly, explains Hanns-Christian Gunga, Professor of Physiology in Extreme Environments at Charite Berlin. So too much heat is just as dangerous as too much cold. If the body temperature were to rise above 42 degrees, or fall below 32 degrees, it could be fatal.
Warning signs: How the body reacts to too much heat?
There are different heat-related illnesses that, in the worst case, can lead to death. Thus arises a Sunstroke by intense sunlight on the head, which can irritate the meninges and cause symptoms such as headaches, nausea and drowsiness, explains Gunga.
If, on the other hand, even slight physical exertion causes the heart to beat faster than usual, you feel weak, sweat more or are disoriented, this could indicate a Heat exhaustion Indicate.
A Heat stroke is again an increase. Because it is life-threatening. Affected people do not have moist, but dry skin and are sometimes bright red.
Furthermore, if the body sweats a lot due to the heat and not enough water is drunk, a lack of fluids can lead to Strokes and heart attacks.
More about heat
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- Occupational safety in summer weather:This applies to employees
- Sleeping in the heat:With these tips it works
- Heat death in the car:How to protect children
- Heat danger:How to recognize sunstroke and heat stroke
Getting too much heat: What helps?
The general rule is: get out of the sun. Rest and cooling down can help if the body has taken on too much heat. Drink just as much water. With serious symptoms, however, should be a Emergency doctor be called.
Sunstroke and heat stroke: how to prevent it?
In extreme temperatures, you should stay at home if possible. For children and the elderly this is especially true. Doctors also advise people not to drink alcohol or sugary drinks. Instead, plenty of water should be drunk and light cotton clothing be worn. In addition, it is recommended to eat rather easily digestible foods. Sunbathing should only last a few minutes, if at all.
Risk group: Do children tolerate less heat?
Especially the bodies of children come with Heat only very difficult to cope with. "The ratio of body surface area to body volume is less favorable in children than in adults", says Jonas Scherer, assistant physician at the Center for Pediatrics and Adolescent Medicine at Mainz University Medical Center. In addition, there is a smaller layer of fat and less blood. Children also sweat less because their sweat glands are smaller.
Just the parked car can therefore become a deadly trap for children. The following Graphic shows how life-threatening even lower outside temperatures are for young occupants.
Elderly people are also particularly at risk in hot weather. You are protected from chronic diseases like Cardiovascular problems often preloaded and often have a reduced sense of thirst. (jtb with dpa/afp)