Actor Amir Noori Underwent Dramatic Transformations

It’s a mainstay of many diets: if you don’t want to get fat, don’t eat fat. Walk down any grocery store aisle and you’ll be bombarded with reduced-fat snacks, dairy, and packaged meals. But while our low-fat options have exploded, so have obesity rates. So, why haven’t low-fat diets worked for more of us?