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Hi there, I am a guy who is 17 years old and I would like to know something. Can you tell me a few things about allergy causes? This would mean much to me. Thank you in advance for your answers. I am really sorry to waste your valuable time but I will know to appreciate your responses.


Hello, no need to apologize. But you should know that different allergy have different causes. For instance, I can tell you something about food allergy. Your immune system can identify some component of food or a food itself like a harmful substance. That is the cause for most food allergies.


An allergen is any substance that causes your body’s immune system to overreact and produce antibodies against it.

There are thousands of allergens that can trigger allergies, but some of the most common include:

  • house dust mites
  • grass and tree pollens
  • pet hair or skin flakes
  • fungal or mould spores
  • food (particularly milk, eggs, wheat, soya, seafood, fruit and nuts)
  • wasp and bee stings
  • certain medication, such as penicillin
  • latex
  • household chemicals