More evidencethat obiesity is not caused by caloric intake, but by the quality of the calories. Via Andrew. I find it interesting that calories are now getting mandatory listings on restaurant menus just as we're discovering they have little impact on weight gain.
The body is a homeostatic system. Fat cells are continually replenished, they're not trashcans that store the fat you injest. This is all hormone-regulated, with insulin being the primarily driver of fat accumulation. Some people are much more predisposed to be insulin sensitive than others (I'm one of these folks). The notion of calorie-restriction has historically been considered a "semi-starvation diet" - something considered unnatural for centuries that became mainstream only in the past 40 years.
I continually recommend reading Gary Taubes's work for an eye opener.
Am I a low carber? Sometimes for long stretches, but I've had a hard time keeping it up lately. I don't cook a lot, and my girlfriend is vegetarian, so I have to hunt for salads mostly. Salty foods (chips in particular) are my kryptonite. Another weakness is social drinking ... a glass of wine or beer at a party or event , or on the weekend, is a great tension reliever, but it doesn't bode well if you're trying to lose weight. I usually feel a lot better when I'm low carbing (after a few days of discomfort, as your body sheds several pounds of water weight...), though I always get a strange "I'm not quite hungry, but I could eat something right now" feeling that takes time to set aside.