Even on the days I'm really hungry I never hit over 1400 calories. This probably comes from my constant dieting before going primal, I never ate more than 1300 calories and when you're consuming a lot of carbs like I was it was easy to hit 1300 with a lot less food. I've never been able to eat a lot; even as a kid I always ate really small portions. You may be right about not needing as many calories, I'm still used to trying to hit that magic # of calories everyday (another symptom of dieting before PB), but I'm learning that I don't need to eat a specific # of calories every day nor do I need to count them constantly. I wouldn't even track calories, but it helps me understand how much protein/fat/carbs I'm eating everyday. I could add in some more carbs, but I'm afraid if I do I'll stop losing weight. My goal is weightloss and lowering my body fat % so I'm trying to stay as low carb as possible. I just finished the 21 day transformation and everytime I've had any kind of grains or starchy carbs I get an upset stomach so I'm stuck with rice for now.
I just bought The Primal Blueprint and haven't made it to the chapter on IF yet, but I should probably skip ahead and read it since so many people have suggested I give it a try. I did go through some issues with anorexia as a teen, and I'm a little worried IF might bring up those issues. I'm a lot healthier now (mentally) and doubt I'd fall back into anorexia, but the thought of it does frighten me a little.