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.
Carbohydrate Content. A medium sweet potato contains 26 grams of carbohydrates, of which 3.8 grams are dietary fiber, while a cup of mashed sweet potatoes has 58 grams of carbohydrates and 8.2 grams of fiber.or example, you could have a medium sweet potato, providing 22.2 grams of available carbs along with other foods that are free of carbohydrates like chicken or salmon, broccoli and butter. Add a serving of plain yogurt and berries to get a total of up to 45 to 60 grams for your meal.