Why do some like it hot? Genetic and environmental contributions to the pleasantness of oral pungency

► We investigated genetics of hedonic responses to oral pungency in twins. ► We used sensory tests and responses to food names to measure aspects of oral pungency. ► Respondents were grouped as likers and non-likers of oral pungency in sensory test. ► Non-likers rated oral pungency more intense and spicy foods less pleasant than likers. ► A common genetic factor regulated responses to oral pungency and spicy foods.