In her book "The Obesity Epidemic" Zoe Harcome fervently denies the calorie-in-equals-calorie-out theorie. I'm reading her book at the moment - very interesting...
I'm eating about 2000 to 3000 kcal a day (vLCHF) and am constantly loosing losing about 2 kg a month... (I'm a female and heigth 5' 6")