Long-term loud farts are not a sign of cancer, but may be related to gastrointestinal abnormalities and excessive consumption of gas-producing foods. 1. Gastrointestinal anomalies: Cold abdomen, indigestion of food, imbalance of gastrointestinal flora and so on may cause abnormal peristalsis of the intestines, which may lead to loud farting. 2. Excessive consumption of gas-producing food: usually consume too much potatoes, beans, turnips and other gas-producing food, which will lead to a large amount of gas in the intestines. And the fiber contained in these foods will promote the peristalsis of the intestines, leading to an increase in gas emission. Cancer requires a series of tests to confirm the diagnosis, and cannot be judged simply by a single symptom such as excessive farting. It is recommended to consult a doctor for examination to find out the specific cause and deal with it positively if there is any abnormality in the body.