Ever gone out on a date with your other half, only to find them sulky and irate for no good reason? And then, after a meal, they seem perfectly fine?
Turns out, it’s true- we do get more prone to being angry when our blood glucose level drops, making it tough to concentrate and more likely to flare up.
A study of married couples over 21 days measured glucose levels in 107 married couples. For 21 days, glucose levels were measured in 107 married couples. To measure aggressive impulses, each evening participants stuck between 0 and 51 pins into a voodoo doll that represented their spouse, depending how angry they were with their spouse. To measure aggression, participants competed against their spouse on a 25-trial task in which the winner blasted the loser with loud noise through headphones. As expected, 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.
If you haven’t had lunch and can’t get all that- in a nutshell, yes, the more hungry you are, the more likely you are to get upset over stuff that usually wouldn’t have you fired up.