Histamine

Inflammation: Mast cells, eosinophils, and Th2 immune cells release histamine, leukotrienes, and cytokines that swell the airway tissue.
Bronchoconstriction: The smooth muscles surrounding the airways contract sharply, narrowing airflow passages.
Mucus overproduction: Chronic inflammation triggers excess mucus that further blocks breathing.

Description

Histamine is a chemical that is produced by the body in response to stress. Will also trigger hpa-axis by consuming histamine rich foods.