I went to the New Media Expo last week. I walked a ton. 17,254 20365 11000 17,179 12521 7657 I barely had time to eat. A smoothie for breakfast and then "lunch" around 7 PM. I often missed lunch, and never even missed it. Am I suggesting we all starve ourselves? NO! My point is there are times when we eat, and we are not hungry. This past week proved to me I can go longer between meals and not die. I found a couple of articles. Hunger Test Article WOmen's Day 4 ways to stop eating  
Have You Tried Nature Box?