Welcome To The World Of Weight Loss is a documentary that follows Vanessa Engle watching members from three different slimming clubs over a three-month period as they attempt to lose weight. She is given unprecedented access to a Weight Watchers group, a Slimming World group and a Rosemary Conley group, and she discovers why we have such a complicated relationship with food and why so many of us find it hard to stay in control of what we eat.