Sometimes you're just too busy to go grocery shopping, meal prep and cook at home, so you pull up to a drive-thru. Even as a nutritionist, I've been in this situation plenty of times, and it's not the end of the world. Small, sustainable changes are key to a healthy diet — you don't have to quit fast food cold turkey. (And yes, healthy options at Chick-fil-A and Taco Bell do exist.) Here are my top five fast food orders:

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