Q: I lost a lot of weight by eating a lot of watermelon. I researched the phenomenon and found the Negative Calorie Food list. Regardless of whether or not you advocate the diet, should it work for me still, even though I quit smoking and my metabolism/pancreas/insulin is all out of whack? I am frustrated with low carb high protein and fat and really miss my fruits but am scared to death to eat them for fear of gaining weight, which has, in the past made me clinically depressed which I take Wellbutrin for. Physiologically, has anything changed that should make my body react differently to this diet than it did when I was a smoker?
A: Nicotine's appetite-reducing effect is associated with increased serotonin levels in the brain center controlling hunger. Overeating and weight gain after smoking cessation is accompanied by decreased concentrations of this natural chemical. This is about your weight gain.
Now, regarding the watermelon matter. I do support the 'negative calorie' approach though, maybe, for a different reason than the popular believe is. In two words, it's all about 'calorie density' and not about foods that take for their digestion more than they can being in.There's no such foods. However, low calorie density approach do work because believe it or not, our bodies judge when we should stop the meal by it's volume and not by counting calories so ounce for ounce, the lower calorie density the less calories we eat to feel full.
As to your problem with fruits while on a low carb diet, I could suggest the 'rotation' approach.