Spicy foods often contain the chemical capsaicin, which activates certain receptors in the mouth, causing your mouth to feel like it is ʺburning.ʺ The receptors activated by capsaicin are also activated by

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Capsaicin activates the TRPV1 receptors, which are sensitive to heat. When these receptors are activated by capsaicin, they send signals to the brain similar to those sent when the mouth is exposed to high temperatures, hence the sensation of heat or burning.

Spicy Foods Often Contain the Chemical Capsaicin, Which Activates Certain