How are hiccups linked to cancer?

Hiccups can sometimes be linked to cancer, particularly in cases where tumors irritate the diaphragm or affect nearby nerves, such as the phrenic nerve. Conditions like esophageal or lung cancer may cause persistent hiccups due to their proximity to the diaphragm or due to treatment side effects. However, hiccups are generally a common, benign phenomenon and are not exclusively indicative of cancer. If hiccups persist for an extended period, it is advisable to consult a healthcare professional for further evaluation.