What Causes Allergies? When the Immune System Overreacts

Allergies happen when harmless things trigger immune alarms.
The body mistakes pollen, dust, or food proteins as threats.
Histamine release causes sneezing, swelling, and itching.
Genetics partly determine how reactive your system is.
Modern hygiene may reduce early microbial exposure, raising allergy risk.
Allergy shots slowly retrain immune tolerance.
Antihistamines block the overreaction, easing symptoms.
Some allergies fade as the immune system matures.
The real goal isn’t to silence immunity—but to balance it.
Allergies are proof of an immune system doing too much of a good thing.