AdvertisementTrans Fat: When Zero Isn't Really Zero00:00Download AudioResumeMarch 26, 2009Allison AubreyfacebookEmailLabels are allowed to claim zero grams of trans fat if they have fewer than 0.49 grams, according to the FDA. To avoid even trace amounts of these harmful fats, don't eat foods with partially hydrogenated oils. (iStockphoto.com)