CONCLUSIONS: High consumption of spicy foods is associated with greater odds of CUD, frequent postprandial fullness and epigastric pain. [ncbi.nlm.nih.gov]

Other personality measures, including Sensitivity to Punishment (SP), Sensitivity to Reward (SR), and the Impulsivity and Risk Taking subscales of the DSM5 Personality Inventory (PID-5) did not show significant relationships with liking of spicy foods [ncbi.nlm.nih.gov]

I sometimes compare hot chiles with winter bathing—if you throw a 17-year-old into cold water she will scream like crazy, but an old woman would swim like nothing bothers her. It’s all in the brain. [firstwefeast.com]