Angry or just hungry?

The next time you feel like picking a fight with your partner, you might want to pick up a sandwich instead.  A recent study found that people are more likely to argue with their spouses when they're hungry.  Researchers found a link between blood sugar and levels of aggression.  That hunger affects self-control and mood is a well-known fact, but this study was the first to apply that knowledge specifically to married couples.  Maybe this explains why couples get into fights about where to go for dinner...