Why do we Get Hangry?

Why does being really hungry so often come with being a little—or a lot—angry? You know, hangry! It happens to the best of us, and it’s not actually a character flaw. It’s triggered by a set of neurons in the brain that activate when we’re hungry. But why? And can we turn those neurons off? Amber Alhadeff studies these neurons in her lab at the University of Pennsylvania.