How does changing your eating habits if you're sedentary disprove the calories in vs calories out notion? Carbs are energy, if you're not using the energy provided by them they're completely useless. You feel more full if you eat food with higher fat content.
I could lose weight every week eating all beef and ice cream as long as I am in a calorie deficit. Not to say I am going to be healthy, I'm just saying I could if I wanted to.
I promote healthy eating: vege's, fruits, meats, occasional treats, etc. I hope no one takes it as I'm anti-healthy eating!