i know exactly what you mean. I can eat like 4 LBS of cucumbers in one sitting and still feel like I could eat a pizza afterwards. when you consume super low calorie foods like cucs and tomatoes, zuchinni, the body actually keeps on counting the calories with incredible accuracy and adjusts your hunger/appetite accordingly. But, I'll say, it does help a little bit and you do get a bit of discount by going with low calorie veggies, it's just not a silver bullet. at the end of the day you'll still consume less calories than you would have: just don't expect one large salad to fill you up. at the end of the day, you still need to go hungry to loose weight or keep it off.