After moving people away from a rich , high-fat American diet full of meat and dairy , McDougall says he 's seen patients lose weight , be cured of constipation and lower their cholesterol levels . Benji Kurtz tried almost every diet without success . Documentary on plant - based eating inspired him to change his diet . He lost 40 pounds in a year .
Benji Kurtz tried almost every diet without success . Documentary on plant - based eating inspired him to change his diet . He lost 40 pounds in a year .