1. What is the reason why babies hiccup? Hiccups in babies are caused by excessive gas accumulation in the gastrointestinal tract, causing the diaphragm to contract involuntarily. This gas can be produced by swallowing air, entering the stomach while breastfeeding, and by digesting food. 2. Will hiccups affect a baby’s health? Generally speaking, hiccups in babies do not have much impact on health. But if you hiccup too frequently