Evolutionary science explains the human attraction to spicy foods

The chemical compound capsaicin, which evolved in plants to deter mammals from eating them, has instead become the foundation of a billion-dollar hot sauce industry. When ingested, capsaicin activates the TRPV1 receptor on the tongue, a pain and temperature sensor that tricks the body into perceiving heat.

To counter this perceived pain, the body releases endorphins and dopamine. This chemical reaction can result in temporary mood boosts and an alert state, similar to a runner’s high. Researchers suggest that various factors, including cultural influences, repeated exposure, and oral anatomy, contribute to why humans find spicy food addictive.

Additionally, approximately one in four people in the United States are classified as “supertasters” by the National Institutes of Health, meaning they possess a more sensitive sense of taste than the average person.