According to a new study published online in Proceedings of the National Academy of Sciences, low glucose levels can lead to greater aggression in married couples — in other words, that fight you had with your significant other may have been a result of hunger. File this one under "news you already knew."
Researchers measured married couples' aggressive impulses and aggressive actions, and compared them with glucose levels. How were these impulses and aggressive actions measured? With voodoo dolls and loud music, of course! From the study's abstract: