Ever sneezed uncontrollably after popping a peppermint or strong mint candy? You're far from alone. This quirky response is a recognized condition known as Autosomal Dominant Compelling Helio-Ophthalmic Outburst Syndrome (ACHOO), affecting an estimated 18 to 35 percent of people in the United States. It can trigger sneezing from pungent flavors like peppermint or chewing gum, bright sunlight, or even a full stomach.
The nose serves as the body's frontline defense against external invaders. Sneezing forcefully expels thousands of bacteria and particles, safeguarding your respiratory system from potential threats.
Menthol in peppermint stimulates the trigeminal nerve (the three-branch nerve) in your palate, sending a signal that mimics an irritant in the nose. Your brain interprets this as a threat, prompting a sneeze. Though menthol is harmless, the body's protective reflex kicks in automatically. The same mechanism explains sun-induced sneezing, where bright light stimulates nerves connected to the eyes.
