That's why so many individuals opted for fat-free cookies (SnackWells, anyone?) and sugary gummies instead of wholesome foods with fat like nuts, seeds, and full-fat dairy products. The problem?

Cookies. Hmmm..."that's a toughie, because there's no way to get around it -- if they're fat-free, the cookies aren't so great, and you end up eating more," she tells WebMD. "Cookies are something ...