Newborn gas: why it happens and how to ease it
A natural stage of adaptation
Gas in a newborn is a build-up of air or gas bubbles in the gastrointestinal tract, causing a bloated feeling, spasms, and discomfort. It is a natural stage: the baby's immature digestive system is adapting to life outside the womb.
- The peak is usually around 3–6 weeks; most babies improve by 3–4 months.
- The common cause is not "bad milk" but gut immaturity, swallowed air, and a forming microbiome.
- Upright holds, tummy time, massage, and warmth usually help — and the phase passes.
Main causes
- Immature GI tract: the enzyme system is still developing and intestinal motility (peristalsis) is poorly coordinated, so gas moves more slowly.
- Swallowing air (aerophagia): happens with a shallow latch, an unsuitable bottle teat, or intense crying before a feed.
- Microbiome formation: in the first months the gut is actively colonised by bacteria, which naturally involves fermentation and gas production.
- Immature nervous regulation: abdominal muscles and sphincters have not yet learned to relax in sync for easy gas release.
Signs of gas build-up
- The baby pulls knees to the tummy, grunts, strains, and turns red.
- The belly looks visibly larger, tense, and firm to the touch.
- Restlessness, crying, or fussiness during or soon after feeding.
- Immediate relief after a burp or when gas passes.
How to help your baby
- Upright hold: keep the baby vertical for 10–15 minutes after feeding so swallowed air can escape. Ideally until you get two burps.
- Tummy time: before feeds, on a firm surface — contact with the surface gently stimulates gas release and strengthens muscles. Tummy-down in the pram works too; for daytime naps, only under close supervision.
- Tummy massage: gentle palm strokes clockwise around the navel and in the lower left area near the thigh.
- Gentle exercises: the "bicycle" legs or softly pressing bent knees toward the tummy.
- Skin-to-skin and warmth: a warm wrap on the belly or carrying in "tiger in the tree" (tummy on the parent's forearm) relaxes the muscles. Tummy-to-tummy with mum or dad works too.
When it gets better — and what else to check
The peak of gas usually falls between 3 and 6 weeks of life and gradually eases by 3–4 months as the digestive tract matures.
Every baby's story is individual. Remember potty holds over the sink, check latch depth at the breast — and know this phase is temporary: the gas will end, and you will be able to enjoy your baby and motherhood without constant grunting, daily massages, and an endless rotation of positions.
Gas passes. Meanwhile, your calm and your closeness are the best remedy.