I would disagree with Phil's post on the matter of counting Calories. On a low carb/ high fat diet, the actual number of calories consumed isn't relevant. We don't function like internal combustion engines and the "calories in ~calories out" thing doesn't work for us as it does for engines. Ultimately the laws of thermodynamics do apply to us, but with enzyme moderated processes, it becomes very complex. If you are interested in this subject, read Gary Tabes's "Good Calories, Bad Calories" I eat very low carb, but quite a lot of calories.
After 3 years, my weight loss has slowed, but I'm still losing slowly. If I up my carbs for any reason, my weightloss stops. Upping Calories in the form of cream or butter has no effect.
Hana