This means that people who enjoy bitter food and drinks, such as coffee, gin-and-tonic, radishes, dark chocolate, and citrus fruits, are more likely to display tendencies of “Machiavellianism, psychopathy, narcissism, and everyday sadism”.

A fun mixture of traits, if we ever heard one.

Researchers weren’t examining why psychopaths prefer bitter foods; however, the study’s author, Christina Sagioglou, did have an explanation - in the wild, poisonous foods tend to taste bitter, which is why so many of us are naturally averse to them.

However one of the primary traits of a psychopath is a sense of fearless bravado – a sort of arrogant confidence that comes into play when bold action is requited.

“Everyday sadism is a construct related to benign Masochism - the enjoyment of painful activities - which was first described and investigated by psychologist Paul Rozin," said Sagioglou.

“To quote Paul Rozin for an explanation: ‘For the case of innately aversive foods, there may be pleasure from the fact that the body is signalling rejection, but the person knows there is no real threat’.”

Gin lovers, science says you all share this unusual personality trait