Again, it’s all a matter of deceptive labeling, thanks to the folks at the FDA. Most varieties of Girl Scout cookies still contain partially hydrogenated vegetable oil, but, because it’s less than a half-gram per serving, thanks to changing the serving sizes from 4 cookies to only 2 cookies, the agency allows cookie makers to get away with calling them trans fat-free when they really aren’t.

And, eating several servings a day — not at all uncommon for people who buy these fatty, sugar-laden cookies every year — means more trans fats patients don’t need.