One thing that has become evident to me especially more recently, is that there are two hungers at war within my body.
There's the body hunger which tells me when I need food for nourishment. And there is the mind hunger which tells me that I want food, often for emotional satisfaction.
And I've learned that most often when I've said "I'm hungry" I'm referring to the mental/emotional hunger.
While paying attention to the signals I'm receiving, I've noticed that I'll often crave food and develop the symptoms of low blood sugar even when my body is telling me that it is full and satisfied.