After doing the gamut of low-fat diets I finally just gave up because there's two things I can't abide: 1. Being hungry; 2. Low-fat/Low-protein. I, too, am hypoglycemic, so when I eat carbs (like in a low-fat diet) my blood sugar spikes then plunges, making me way hungrier yet.

Yes, I find I can eat a lot more on Atkins and lose weight (well, at least until I quit losing a couple of months ago--am back to losing now). Previously I would eat around 1200 calories a day and maybe take off a pound or two a week in a good week. I can now eat close to 2,000 calories a day and sometimes lose as much as 3-4 pounds a week. Considering my height, weight and activity level, there's no way a simple calorie deficit would create that kind of weight loss. Nifty, huh?