How does the rise in temperature affect the human body?


by

Adam Kontor

The rise in temperature due to global warming not only changes the environment of the earth, but also has a lot of impact on people's lives. In the summer of 2019, we recorded “hot days” with a maximum temperature of over 35 degrees in Japan, as well as many deaths in Europe and India. Elizabeth Hannah , an honorary researcher at the National University of Australia , explains the question: 'How does the rise in temperature affect the human body?'

How rising temperatures affect our health
https://theconversation.com/how-rising-temperatures-affect-our-health-123016

Like most mammals and birds, humans are constant temperature animals that can keep their body temperature constant regardless of temperature or water temperature. The comfortable internal temperature for humans is approximately 36 to 37 degrees, and even a person sitting quietly in a room with a temperature of 22 degrees generates heat of nearly 15 degrees in the body, and the body temperature is 37 degrees I keep it close.

Humans produce heat by metabolism , and even if the temperature reaches 38 degrees above the comfortable temperature of the human body, heat from metabolism is born. Since surplus heat needs to be released from the human body, humans sweat and evaporate sweat from the skin surface to lower body temperature by heat of vaporization .

When the surrounding air is hot and humid, sweat does not easily evaporate, so it is easier for humans to spend dry air than moist air even at the same temperature. In addition, since the saturated air that comes into contact with the skin is removed when exposed to the wind, sweat evaporation and heat dissipation are promoted, and humans feel refreshed.


by

un-perfekt

If a human thermoregulatory system works well, it can withstand some high temperatures, but if the body temperature rises excessively, humans are at risk of life. Most people feel tired when their body temperature reaches 38.5 degrees. In addition, the proteins that make up humans are vulnerable to heat, and there is a risk that proteins in the body will break due to an increase in body temperature.

In addition, important organs such as the heart, brain, and kidneys may lose their vital functions to keep the human body alive. The heart pumps blood through the body, but the rise in body temperature places a heavy load on the heart. Also, if you sweat a lot and become dehydrated and the amount of water in the blood vessels decreases, more work is required and heart failure may occur if the heart cannot withstand the load.

People who regularly do a lot of aerobic exercise seem to be resistant to heat to some extent, but even first-class athletes and young people are at risk of losing their lives if it is too hot. Elderly and obese people are even more at risk, and people who are taking various medicines to treat their illness should be careful.

In addition, Mr. Hannah is calling attention to pregnant women. In the second trimester of pregnancy, the body temperature rises by about 0.5 degrees from normal due to an increase in hormonal response and metabolic rate. A lot of blood is also delivered to the growing fetus, but too high a fetal body temperature can cause health problems such as preterm birth and congenital heart disease. It is necessary.


by Garon Piceli

Mr. Hanna points out that the human body has the ability to withstand certain high temperatures, but there are limits to that. No matter how hot it is, Hanna said that human society is a difficult system to live without going out at all, and global warming has a negative impact on human health.

in Science, Posted by log1h_ik