What do people get allergies from? Detailed answer

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What do people get allergies from? Detailed answer

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What do people get allergies from?

What is an allergy? This is a pathological condition of the body in which a person has an increased sensitivity or generally an unusual reaction to a substance or some other physical factor. Many phenomena fit this definition, and the range of manifestation of allergies is very wide.

People can develop allergies to different kinds of food, medicines, dust, pollen, different kinds of matter, animals, heat, sunlight, and many other things. External manifestations (symptoms) of allergies can also be very diverse. But most often, skin and mucous membranes suffer from allergies. And it develops due to changes occurring in the cells of the body. If something foreign enters the tissues of the body, the body usually tries to fight it by producing substances called antibodies. They connect with foreign inclusions and neutralize them.

But when these inclusions enter the body a second time, the antibodies that have connected with the cells of the body break away from them to fight off irritants. This releases a chemical called histamine, and when that histamine reaches the skin or mucous membranes, it damages them, causing problems in the body that are symptoms of an allergy.

Not all the facts related to allergies have been explained by scientists, but it is believed that in some cases allergies can be inherited. Certain weaknesses in the structure and functioning of the organs of the body can serve as the basis for the development of allergies. The adrenal gland is also thought to be involved in some way, making some people more prone to allergies than others. And it is also believed that even mental states play a role in the development of allergies in some people.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Who and when managed to live for 10 years on counterfeit one-dollar bills?

American Emerich Juttner counterfeited one-dollar bills for 10 years and avoided being caught by the US Secret Service hunting for him. Starting his trade in 1938, Juttner made 10-12 such bills every week and tried to pay them in various shops in Manhattan. When he was eventually arrested, the court took into account that the defendant used counterfeit money only personally and to buy the most necessary things, assigning him a prison term of 1 year and 1 day, as well as a $ 1 fine. After getting out of prison, Juttner sold the film rights to his story and earned more than all his forgeries combined were worth.

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Sleep supports antioxidant processes in the body 25.07.2018

Sleep is a state that is natural not only for humans, but also for almost all animals, starting with insects. While we sleep, our body rests, the brain processes the information received during the day, our health is strengthened. It turned out that sleep also plays an important role as an antioxidant agent: it reduces oxidative stress, and the latter, on the contrary, can cause sleep disturbances.

This two-way relationship between the two processes was identified by a team of scientists from Columbia University (New York, USA). Biologists conducted a study in which they observed mutant types of Drosophila fruit flies. Insects bred in the laboratory sleep very little. Scientists have determined that due to lack of sleep, these fruit flies are subject to oxidative stress to a greater extent than their relatives who do not have sleep problems.

Oxidative stress develops when free oxygen radicals (molecules without one electron) damage healthy cells in the body. Molecules can start a chain reaction - and in this case, a serious disease develops: from diabetes to cancer. In addition, oxidative stress damages neurons, triggering pathological responses. Free radicals are inevitably formed in the body, in a certain amount they are even useful: they help fight bacteria. However, if there are too many of them, they themselves become harmful to health. Their number increases under the influence of various factors: stress, poor environment, medication, heavy physical activity.

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Researchers have found that one of the functions of sleep is to protect against oxidative stress. Based on this, the authors also suggested that oxidative stress may also affect sleep. Testing this hypothesis, they stimulated the genes of the antioxidant system in Drosophila, thereby reducing oxidative stress. This change literally put the flies to sleep. Otherwise, the unpleasant state caused insomnia.

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