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Electric fan: how high temperature and physiology interact

Time：2021-11-24Views：0

Various factors (age, heart health, and medical prescriptions) affect the body's response and adaptation to the hot environment. Just like the European heat wave that killed at least 30,000 people in 2003 and the Moscow heat wave that killed nearly 11,000 people in 2010, the destructive power of the heat wave may be unfathomable. As the global warming continues to intensify, it will become increasingly important for scientists, doctors and public health managers to understand how high temperatures interact with physiology.

The circulation of air will evaporate moisture and sweat from the human body. Nevertheless, sweating is a way for our body to regulate body temperature. If you keep sweating, it can lead to dehydration and electrolyte imbalance. If dehydration gets worse, it increases the risk of heatstroke or stroke. It is a challenge for anyone's body to maintain a stable temperature of 37°C at high temperatures. The cardiovascular system adjusts heart rate and blood pressure to compensate for dehydration, and begins to pump more blood from the core to the skin, where the sweat glands allow evaporative cooling (sweat). The kidney system carefully regulates the water and electrolyte levels in the body to avoid further dehydration. The brain continues to perform its tasks, sending signals to the body (such as thirsty, fatigue, and warmth), urging us to drink water, and then retreat to a cool place or take off our clothes. When these changes are not enough, the core temperature of the human body will continue to rise, which can cause fatigue, weakness, dizziness, cramps, swelling, nausea, and even fainting. When the internal temperature of the body rises to 40°C, heat stroke will occur, and the organs and central nervous system will begin to malfunction or malfunction. According to statistics from the World Health Organization, the mortality rate of heatstroke patients is about 50%.

Not only that, but more and more evidence also shows that if people with mental illness take psychotropic drugs that interfere with the body's self-cooling, their bodies may be more affected by heat waves. This risk may be partly due to the side effects of certain medications, but this does not mean that medication should be stopped in order to avoid heat stroke.

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Electric fan: how high temperature and physiology interact