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Gezeichnet ist ein Mann, der von der Sonne erschöpft ist und sich einen kühlenden Lappen an die Stirn hält.

Effects of heat on health

Warm temperatures can put a strain on the human body and thus affect health. It is particularly stressful for your well-being and health when temperatures exceed 30 °C during the day and do not fall below 20 °C at night. The body cannot recover sufficiently during these nights.
The body adapts to deal with the heat. The blood vessels dilate and allow the body to release excess heat. However, in incessant and high heat, this natural adaptation can have an impact on the health. If the body is no longer able to adapt sufficiently to the heat and regulate body temperature, serious health risks can occur. Certain groups of people, such as the elderly, children and people with pre-existing conditions, are more affected by heat because they cannot adapt so well to the high temperatures.

Our body react to heat

The body adapts to deal with the heat. The blood vessels dilate and allow the body to release excess heat. However, in incessant and high heat, this natural adaptation can have an impact on the health. If the body is no longer able to adapt sufficiently to the heat and regulate body temperature, serious health risks can occur. Certain groups of people, such as the elderly, children and people with pre-existing conditions, are more affected by heat because they cannot adapt so well to the high temperatures.

Consequences of the heat

Consequences of the heat are, for example:

  • Dehydration
  • Low blood pressure and circulatory problems
  • Headaches
  • Swollen legs due to water retention
  • Skin rash
  • Muscle spasm
  • Sunburn as a result of UV radiation

A long stay in the sun can lead to heat stroke or sunstroke. The following table describes the symptoms by which you can recognise heat stroke and sunstroke.

Model figure with a reddish-tinged head

Sunstroke

Sunstroke occurs when the brain overheats. The meninges become irritated. You can recognize sunstroke by the following symptoms:

  • Overheating of the brain
  • irritation of the meninges membranes
  • Head is red and hot
  • Body is cool, sweating
  • Neck stiffness
  • Headache
  • Nausea, vomiting
  • Reduced state of consciousness
Stable lateral position, illustrated by model figures.

Heatstroke

In heatstroke, the body temperature rises too high. The body can no longer cool down and overheats.

You can recognize heatstroke by the following symptoms:

[KISTE The core body temperature can increase to over 40 °C;
The whole body is affected;
Hot, dry skin, no sweating;
Headache;
Nausea, vomiting;
Reduced state of consciousness;
Accelerated pulse and breathing]

Heat stroke is always an emergency. DIAL THE EMERGENCY NUMBER 112 IMMEDIATELY! Immediately move the person to a shady, cool place. Cool the forehead and neck. If they are unconscious, put the person into the recovery position and check their breathing.

Dehydration

A child can be seen from behind, drinking water from a bottle in sunlight.

At high temperatures, it is important to drink enough, otherwise it can easily lead to a lack of fluids, in other words dehydration.

Signs of dehydration include:

  • Thirst
  • Dry mouth and mucous membranes
  • Headache, dizziness, weakness
  • Little urge to urinate
  • Dark urine
  • Confusion
  • Heart palpitations
  • Muscle cramps

Ozone pollution

Heat and strong sunlight lead to increased ozone formation near the ground. Ozone irritates the respiratory tract and mucous membranes. High concentrations can trigger respiratory problems, headaches, and irritated eyes. When ozone levels are high, you should avoid exercise. People with respiratory illnesses often experience more severe symptoms.
In Bremen and Bremerhaven, monitoring stations measure ozone levels and display the current pollution levels.
Farbverlauf rot blau · Leo Lindl