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The fluctuating weather seems to have ended giving way to scorching temperatures.
These temperatures are more unbearable, especially for children and the elderly.
But the great heat is extremely dangerous, especially for people suffering from cardiovascular diseases.
How heat affects the body
Body temperature should be neither too hot nor too cold.
According to AgroWeb.org data, if the temperature rises significantly, the proteins that protect the organism and are responsible for each of its processes stop functioning.
The human body manages to cope with high heat in two ways which stress the heart.
Radiation
Heat in the body moves from warmer to cooler areas.
As long as the surrounding air is colder than the body, the organism radiates heat into the air.
This radiation stops as soon as the air temperature approaches that of the body.
Radiation is a process that requires a more centralized blood circulation, especially in the skin area.
This makes the heart beat faster and pump more blood.
On a sunny day, the heart circulates two to four times more blood per minute than on a cool day.
evaporation
Each sweat molecule that evaporates from the skin takes excess heat with it.
On a non-humid day, the evaporation of sweat (an amount equivalent to a teaspoon) significantly cools the whole blood.
But when humidity rises above 75%, evaporation of sweat becomes extremely difficult.
Evaporation of sweat increases the pressure on the cardiovascular system.
According to data from AgroWeb.org, sweat takes more heat from the body, along with many minerals useful for nerves, muscles and fluid balance.
This forces the body to release more hormones that help the body retain more water and minimize mineral loss.
Shthe world of the Heartand PConfrontation with Heat
Healthy people manage to have a higher tolerance to temperature changes.
People who have heart problems have a more stressed organism and are therefore hit harder by the heat.
The heart in people who have had an attack has a harder time pumping enough blood to cope with the heat.
Clogged blood vessels due to cholesterol have poor blood circulation in the skin.
Ischemia, Parkinson’s, Alzheimer’s, Diabetes and others negatively affect the brain’s response to dehydration.
Thus, the brain fails to send the thirst signals and the body suffers the consequences.
How to beat the heat
Experts recommend that people who perform physical activity, do it in the early morning or late evening.
At the peak of the heat, be sure to stay in an air-conditioned environment, take a bath or apply cool compresses under the armpits.
AgroWeb.org advises you to make sure you drink water every hour on hot days.
Do not drink carbonated liquids, with sugar, alcohol or caffeine, which worsen dehydration.AgroWeb.org
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