This whole show is flawed.
I don't think anyone questions that the people on this show need to make serious lifestyle and diet changes. In that sense, there is nothing wrong with Gillian's approach.
The problem is that she forces them all to eat the most disgusting, horrendous foods. And I used to be vegan, so it's not like I'm a paunchy epicure bemoaning the absence of foie gras or something. I mean there are perfectly tasty vegan meals she could be offering these people. Instead they get horrible wheat germ smoothies, unmolested tofu, etc. Well if that's what you're insisting that healthy people eat, then no wonder all these people are fat! Plus, these are people who are accustomed to eat extremely bad food. You think people accustomed to daily fry-ups are going to tolerate wheat germ dinners?
The detox program argument is weak too: how exactly is her regimen supposed to help these people? What's going to happen to these people when Gillian's cameras go away?
A better idea would be to get a cook of some sort to cook the meals with Gillian's guidance. Gillian's meals are disgusting; she obviously doesn't care about flavor. Get someone like Jamie Oliver to help with the food, then show the people that eating right does not need to mean eliminating flavor. Don't tell them they're fat, then force them to eat soy all the time. That's completely worthless.
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My power is discombobulatingly devastating.