Credit: malerapaso / Getty Images A recent review in Frontiers in Nutrition highlights resistant starch — the type naturally found in beans, bananas, and cooled potatoes — as a surprising carb that may improve blood sugar control, reduce inflammation, and even support weight management. Before eating large amounts of day-old rice, experts say it’s not a magic fix. Adding resistant starch to a diet high in refined carbs and sugar won’t undo the damage.