Why Does Pepper Make You Sneeze?

The video explores the dual nature of stimulants, using pepper as an example. It discusses how pepper, known for its stimulating properties, can be irritating in certain contexts. Historically, pepper was used for its medicinal properties due to piperine, an alkaloid with health benefits. However, piperine can also cause sneezing by irritating nasal membranes. The video concludes by explaining the reflexive nature of sneezing and advises against putting food up the nose.

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