True, The body needs insulin to store any kind of fat. low-carb = no (very low) insulin = can't store fat !!!

In "adiposity 101" http://www.omen.com/adipos.html) there is a qote from Iliya.
"Without insulin fat will not be stored in
any appreciable amounts. This is confirmed by my own (and a few
others) experience where I would eat 5000 calories per day and not
gain weight, as long as I didn't have any carbs and didn't allow
myself to slip into deep ketosis. (I am right now probably around
175lbs, so 5000 calories per day for me on a continous basis is a
lot). "

danny