Other causes of stomach rumbles: 1  Incomplete digestion of food can lead to excess gas in the intestine. 2  Louder rumbles may occur when one is hungry. 3  Stomach rumbles can form further along the gastrointestinal system when air is swallowed while talking, eating, and drinking.
One cup of raw yams contains about 158 calories, whereas 1 cup of raw sweet potatoes contains about 114 calories. Therefore, yams contain about 44 more calories than sweet potatoes for an equal portion.
A medium baked potato has 150 calories, 35 grams of carbs and 2 to 3 grams of fiber. A medium baked sweet potato has 100 calories, 25 grams of carbs and 4 grams of fiber. Other starchy root vegetables include parsnips and rutabagas, although parsnips are a little higher in carbs than rutabagas.