What are allergies and why are we getting more of them? - Deepstash
What are allergies and why are we getting more of them?

What are allergies and why are we getting more of them?

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Allergic reactions

Allergies occur when the immune system reacts to environmental substances that are harmless to most people.

Common allergens are food, pollen, dust mites, animals, insect stings, or medicines.

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A range of allergic reactions

Most allergic reactions are only mild to moderate and can effectively be treated with antihistamines. But other reactions can be life-threatening and require emergency medical treatment.

The most severe allergic reactions are known as anaphylaxis, and people who suffer from it should have an emergency management plan that includes an adrenaline auto-injector.

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Allergies are increasing

Allergies are becoming more frequent in the western world. One in twenty will develop a food allergy in their life, and one in 100 will have a life-threatening allergic reaction.

From 1994 to 2004, hospital admissions for anaphylaxis doubled. In children under five years old, it was five times higher over the same period, suggesting allergy in early life is increasing faster than in adults.

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Possible reasons for allergies

Theories for why the number of allergies is rising:

  • Decreased exposure to infections or microbes in early life. This is known as the hygiene hypothesis.
  • Delayed introduction of allergenic foods until later in childhood, such as eggs and nuts.
  • Different methods of preparing foods. For example, roasting peanuts increases allergenicity while boiling reduces them.
  • Vit D deficiency increases the risk of developing allergies, according to several studies.
  • Allergies may develop after exposure to allergens.
  • Altered gut bacterial species due to low-fibre diets and antibiotic use.

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CURATED BY

corahh

Friend of animals everywhere. Hardcore internet enthusiast and avid reader. My favorite topic is how to live a healthy life

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