Support WBURHow Food And Clothing Size Labels Affect What We Eat And What We WearPlay04:35Download AudioShankar VedantamSeptember 26, 2012 ShareThere's no industry standard size for food and drink portions, so it's hard to compare a Big Gulp with a McDonald's medium soda. (Getty Images)
There's no industry standard size for food and drink portions, so it's hard to compare a Big Gulp with a McDonald's medium soda. (Getty Images)