A friend of mine has been doing Slimming World for nearly 7 years and is bigger now than when she started. The concept doesn't seem at all scientific to me. It's universally known that to lose weight you need to intake less calories than you expend and as good as exercise is realistically you need to reduce your calorie intake over a period of time to lose weight.

Slimming World have this idea of not referring to calories at all but use some kind of points system and allow a certain amount of what they call "syns". The problem is for example my friend has absolutely no idea what her calorie intake is from day to day and uses her "syns" to justify eating cakes, bread and Knickerbocker Glories!!! Her response to everything is ...'its free on Slimming World"