For 21 days, glucose levels were measured in 107 married couples. Then, participants competed against their spouse on a 25-trial task in which the winner blasted the loser with loud noise through headphones.
Participants were then given a voodoo doll to represent their spouse and 51 pins that could be stuck into the doll.
In the publication released today, researchers found “the lower the level of glucose in the blood, the greater number of pins participants stuck into the voodoo doll, and the higher intensity and longer duration of noise participants set for their spouse.”
People who have not eaten recently or are hungry were at a higher risk of aggression.
The term “hangry” comes from the combination of the words “hungry” and “angry,” indicating that hungry people are often angry.
Researchers say giving individuals more access to food could be a potential tool for curbing aggression by bolstering resources for effective self-control.