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.
Baking is a popular method of preparing them. Low in fat, a baked sweet potato is a healthy source of calories and nutrients. One medium-sized, baked sweet potato is approximately 2 inches in diameter and 5 inches long. It weighs 114 grams and provides a total of 103 calories. That same medium baked potato has approximately 24 grams of carbohydrates with 3.8 grams of fiber and 7.39 grams of sugar. It also provides 2.29 grams of protein, less than 1 gram of total fat and 41 milligrams of sodium.