Every Sunday night at 10/9c, BBC America presents a series of documentaries that take an in-depth, honest, and often surprising look at some of the body image issues that people are struggling to overcome in their search for happiness.

In this shocking documentary about the extreme lengths some women will go to lose weight, two average-sized journalists accept a challenge to whittle themselves down to a size zero within 5 weeks. With everything short of surgery and drugs at their disposal, the effects of the rapid weight loss and extreme dieting on these two women has to be seen to be believed.