Yes it does work & like Daisymae I have lost 21lbs since August and that also includes holiday periods when (2) where I gained a few pounds. However the difference with this lifestyle ..and it should be thought of as a lifestyle is that I was able to get right back on track after my hols & now after Xmas straight away, whereas with past 'diets' I have put it off until regaining everything lost & sometimes put more on besides. Its VERY flexible, totally sustainable and something I really do see as my future life style..forever..
The health benefits have been amazing BP wise, joint inflammation wise!
However one area of warning..this is not a quick fix weight loss route..after the initial water weight losses it is a slow and gentle loss route. The calorie maths are that if you keep to the 500-2000 ratio and dependent on age, exercise level and strictness etc you are set to lose between 1 & 1.5lbs per week. This however suits me just fine!