Newborns get hiccups mainly because their breathing and feeding systems are still immature , and the diaphragm (the breathing muscle) is very easy to trigger in early life.

What hiccups actually are

  • A hiccup happens when the diaphragm suddenly spasms and pulls in a quick breath, and then the vocal cords snap shut, making the “hic” sound.
  • In newborns, the diaphragm and the nerves that control it are still developing, so they react more easily than in older kids or adults.

Why newborns get hiccups so often

  • Feeding is the most common trigger: eating too fast, too much, or swallowing air can stretch the stomach so it presses on the diaphragm and makes it spasm.
  • Sudden changes in what’s in the stomach (like temperature shifts between cold milk and warmer foods later on) may also irritate the diaphragm and bring on hiccups.
  • Mild reflux (milk and stomach acid briefly coming back up the esophagus) can irritate the area and trigger nerves that make the diaphragm contract.

Is it normal or a problem?

  • For most newborns, hiccups are common, harmless, and don’t bother the baby, even if they look dramatic to parents.
  • Hiccups can even happen before birth in the womb and are still usually normal.
  • Doctors mainly worry if hiccups are very frequent and paired with distress signs like poor feeding, vomiting, or trouble breathing, which can suggest reflux disease or another issue.

Simple ways parents often help

  • Pause or slow feeds, and burp the baby more often so the stomach doesn’t overfill or fill with too much air.
  • Keeping baby upright for a short time after feeding can reduce reflux and may reduce hiccup episodes.
  • If hiccups don’t seem to bother the baby, it is usually safe to just let them pass on their own.

When to check with a doctor

  • Hiccups combined with frequent coughing, arching, crying during feeds, or poor weight gain should be discussed with a pediatrician, as they can be signs of gastroesophageal reflux disease or another underlying problem.
  • Very long or unusually persistent hiccup episodes that interfere with sleep or feeding also deserve a professional check.

TL;DR: Newborns get hiccups because their diaphragm and feeding patterns are still maturing; most episodes are normal and related to feeding, stomach fullness, or mild reflux, and only rarely signal something more serious.

Information gathered from public forums or data available on the internet and portrayed here.