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 serving of sweet potato fries contains 16 g of carbohydrates or about 5 percent of the daily value for carbohydrates. This total includes 10 g of starch, 3 g of sugar and 3 g of dietary fiber. This fiber content provides 12 percent of the daily value for fiber.