Their bright packaging may appeal to children, but their nutrition may not pass muster with parents ...

Yogurt can be a confusing food item when you're on a low-carb ... generally has more carbs than traditional or Greek yogurt. A 6-ounce container provides about 13.5g of carbohydrate.

"Most of these are used as food preservatives and have been ... She said that a ¾-cup (6-ounce) serving of nonfat Greek yogurt clocks in at around 18 grams of protein and 100 calories per serving.