Eating healthily is on all our minds at this time of year, but few of us go to the lengths of the fanatics in this show. The Raw Foodists are a growing community of men and women who believe theirs is the healthiest diet on the planet. They don't eat wheat, dairy, sugar, meat or fish, and everything they do eat is raw, because they believe heating food above 45C destroys enzymes and nutrients. Some also drink urine and have enemas every day.