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Intestinal gas that's passed from the anus.

Don't eat certain foods, including beans and lentils, and limit dairy foods with lactose, fruits containing fructose, and the sweetener sorbitol. Taking a walk after meals may help.

See a healthcare professional immediately if:

• Blood in the stool.

Make an appointment to see a healthcare professional if:

• Long-lasting or severe.
• Vomiting, diarrhea or constipation.
• Losing weight without trying.
• Heartburn.