Avoiding fat has no effect on the risk of gallstones. Consume less sugar. Reduce your intake of high-sugar items such as sweetened beverages, desserts, chocolate, and candy. Unsalted nuts should be eaten a few times a week. They are a good source of iron and can help reduce cholesterol levels. Chocolate contains chemicals that can cause problems for people with gallbladders. These problems include pain, nausea, vomiting, and diarrhea. Eating more foods high in fiber may help prevent gallstones. Examples of high-fiber foods include apples, carrots, peas, beans, potatoes, whole-wheat flour, and oats. People who have gallstones are more likely to get pancreatitis. Pancreatitis is an inflammation of the pancreas that can lead to severe pain, vomiting, and diarrhea. Avoid alcohol; it increases the risk of developing pancreatitis. Seek medical attention if you experience symptoms of pancreatitis. Your doctor will conduct tests to determine the cause of the disease.