Your gut bacteria is imbalanced
Think of your digestive tract as one long muscular tube—food goes in the top and the muscle contracts to push it along out the bottom. “Normally, the small intestines makes strong contractions to sweep food into the colon,” says Dr. Gross. But sometimes medications, infections, certain diseases and conditions (such as diabetes or neuromuscular conditions) or complications from surgeries can interfere with this “clearance wave,” says Dr. Gross, allowing bacteria to get a foothold in the small intestine and overgrow, producing extra gas.