What Is Histamine?


Simple Definition:

Histamine is a chemical compound [substance made from a single type of molecules] released by cells in the body that causes allergic reactions [body’s response to something it doesn’t like] such as sneezing, itching, and swelling. It is also involved in regulating stomach acid production.

  • Example 1: When you have an allergic reaction to pollen, your body releases histamine, causing your nose to run and your eyes to water.
  • Example 2: Histamine is released when you get stung by a bee, causing the area to become red and swollen.

Very Simple Definition:

Histamine is a substance that your body produces when something makes it unhappy, and it can make you sneeze, itch, and swell.

  • Example 1: If you touch something you are allergic to, like a cat, histamine can make you sneeze and feel itchy.
  • Example 2: When you get a mosquito bite, histamine can make the area around it become red and puffy.

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