Why does your lower belly rumble?

Lower belly rumbling, often referred to as borborygmi, is typically caused by the movement of gas and fluid in the intestines as part of the digestive process. It can occur when you are hungry, as the body prepares for incoming food, or after eating, when the digestive system is actively breaking down nutrients. Stress and anxiety can also lead to increased intestinal activity, resulting in more noticeable sounds. Overall, it's a normal physiological response.