Serious allergies are life-threatening. Why are there a surg

BEIJING, Sept. 18 (CNS) -- According to Taiwan's Joint News Network, food allergy cases have increased significantly in recent decades. At present, 7% of children in Britain are affected by food allergy, and 9% in Australia. Two percent of adults across Europe are allergic to specific foods. Researchers around the world are trying to find ways to combat this phenomenon.

Allergies are reported to be caused by the body's immune system against certain substances from the outside world. The symptoms of allergic reaction include skin redness, swelling, urticaria, etc. In severe cases, it can also lead to vomiting, diarrhea, dyspnea and anaphylactic shock, and may even endanger life.

Food allergies have increased significantly over the past 30 years, especially in developed industrialized societies. The most common foods that cause allergies in children include milk, eggs, peanuts, nuts, sesame, fish and shellfish.

There is no single explanation for why more and more people are allergic to food all over the world, but academia has pointed out the following possibilities.

Environmental factors change the way the immune system responds

In addition to people's increased awareness of allergies and their ability to diagnose allergies, environmental factors may also be responsible for the increase in allergy rates.

Allergy rates are low in developing countries, and allergies are more likely to occur in urban rather than rural areas, possibly due to pollution, dietary changes and less exposure to microorganisms. These factors change the way the immune system reacts.

In addition, the incidence of asthma and food allergies among immigrants seems to be higher than that in their countries of origin, which further illustrates the importance of environmental factors.

"Opponents" are less likely to attack harmless substances by the immune system

Researchers also pointed out that improved hygiene reduced children's chances of infection, especially parasitic infections. As the number of parasites to deal with decreases, the human immune system turns to what is otherwise harmless.

Lack of antiallergic vitamin D without sun exposure

Another cause of allergies is the lack of vitamin D. At present, most of the world's population is unable to get enough vitamin D because of the lack of sunshine, and the incidence of vitamin D deficiency in the United States has almost doubled in the past 10 years.

Other studies suggest that proper feeding of foods prone to allergies during weaning can prevent the occurrence of allergies. Research from King's College London shows that babies who start feeding peanuts after birth are 80% less likely to be allergic to peanuts by age 5.

There is no cure for food allergy. People should avoid food allergies caused by meetings as much as possible and seek medical treatment as quickly as possible when allergies occur.