Why is My Baby Gassy? Causes, Symptoms, and Safe Relief for Newborns

You’ve finally got the baby to sleep. You put them down, tiptoe away… and 10 minutes later they’re red-faced, grunting, pulling their knees up, clearly miserable. If you keep asking yourself, «Why is my baby gassy all the time?» you are absolutely not alone.

Gas in babies is common, often noisy, and usually harmless. The good news: there are simple, practical things you can do at home to help.

This guide breaks down why baby gas happens, how to spot baby gas symptoms, the difference between colic vs gas, and specific infant gas relief techniques you can start using today.

Why babies are so gassy

Adults pass gas without thinking about it. Babies? Their bodies are still learning.

1. Immature digestive system

In the first few months, a baby’s digestive system is still developing. The muscles that move milk through the gut can be a bit uncoordinated, and the balance of gut bacteria is still shifting.

That mix often leads to:

• more gas being produced
• gas getting «trapped» and causing pressure
• a lot of squirming and grunting as they try to push it out

Newborn gas is especially common in the first 12 weeks, which also happens to be when crying is often at its peak.

2. Swallowing air while feeding or crying

Every time your baby eats or cries hard, some air gets swallowed. Too much air in the tummy means more gas later.

Babies might swallow extra air if:

• the latch on the breast or bottle isn’t quite right
• bottle teats flow too fast or too slow
• they are lying flat while feeding
• they are very upset and crying for long stretches

This is one reason burping baby during and after feeds can make such a difference. You’re helping that air escape before it travels into the intestines.

3. Maternal diet and baby gas (less common than you think)

Breastfeeding mums often wonder about maternal diet and baby gas:
«Was it the broccoli? The beans? The curry?»

For most babies, mum’s diet is not the main cause of gas. Typical healthy foods like onions, cabbage or beans that make adults gassy do not automatically cause the same effect in breastfed babies.

Sometimes, though, certain foods can make symptoms worse, especially if:

• there is a family history of allergy
• baby has other signs like blood or mucus in stools, eczema, or poor weight gain

If you notice a very consistent pattern – for example, baby is always extremely unsettled after you drink a large amount of cow’s milk – speak to your GP or health visitor before cutting major foods. They can help you rule out allergy and avoid unnecessary restrictions.

Formula-fed babies can also be gassy. In that case it might be:

• the way the bottle is prepared or held
• the teat flow
• sometimes, sensitivity to a particular formula

Again, best to chat with your health professional before switching formulas repeatedly.

Signs of gas in babies

Babies cry for many reasons. So how do you tell if gas is part of it?

Common signs of gas in babies include:

• Pulling legs up to chest
  This is a classic. Baby curls up, brings knees towards the tummy, then stretches back out.

• Arching the back
  Some babies stiffen and arch as if trying to escape the discomfort.

• Hard, distended tummy
  The belly can feel firm or look bloated compared with their usual soft tummy.

• Squirming and wriggling
  Constant shifting, kicking, twisting, often while grunting.

• Grunting, straining, passing loud gas
  Lots of effort, sometimes with a red or strained face.

• Crying that starts suddenly
  They may go from fine to furious very quickly, then settle once they pass wind or have a poo.

If your baby relaxes, maybe even smiles, after a big fart or burp, that is a good sign that gas was at least part of the problem.

Gas vs colic: what’s the difference?

People often mix up baby gas and baby colic. They sometimes overlap, but they are not the same thing.

What is colic?

Colic usually means:

• Crying for more than 3 hours a day
• On at least 3 days a week
• For 3 weeks or more
• In an otherwise healthy, well-fed baby

The crying is often intense, hard to soothe, and often worse in the late afternoon or evening. There is no clear single cause.

Gas vs colic in real life

With gas, you often see:

• clear body language of discomfort (knees up, arching, grunting)
• a firm tummy
• crying that starts and stops more suddenly
• clear relief after burping, farting, or a poo

With colic:

• crying goes on for long stretches without an obvious trigger
• relief after passing gas is often temporary or minimal
• baby may seem inconsolable despite trying all the tricks

Some babies have both. Gas can be one piece of the colic puzzle, but not the whole story.

If you are unsure if your baby has colic vs gas, or you are simply worried the crying is too much, speak to your GP or health visitor. Trust your instincts.

Safe, gentle ways to relieve baby gas

Here are tried-and-tested infant gas relief techniques. You can use several of them together during a fussy spell.

1. Bicycle legs

This is simple and surprisingly effective.

1. Lay baby on their back on a firm, safe surface.
2. Gently hold both ankles.
3. Move their legs in a cycling motion – like they’re riding a tiny bike.
4. Go slowly, watch baby’s face, and stop if they seem uncomfortable.

This motion helps move gas through the intestines. You can do it for a few minutes, several times a day, especially before bed or after a feed.

2. Tummy massage for baby gas

Gentle massage for baby gas can ease pressure and help gas move along.

A few tips:

• Make sure the room is warm and your hands are clean and warm.
• Use a tiny bit of baby-safe oil if you like, so your hands glide easily.
• Keep movements soft, never pressing hard.

Try these patterns:

• Clockwise circles
  Imagine a clock face on baby’s tummy. Use your fingers or palm to make small clockwise circles around the belly button. This follows the natural direction of the intestines.

• The “I Love U” pattern

  1. Draw a gentle line down the left side of baby’s tummy (your right side). This is the “I”.
  2. Then draw an upside-down “L” – across the top of the tummy from baby’s right to left, then down the left side.
  3. Finally, draw an upside-down “U” – starting at baby’s right side, up and over the belly button, and down the left side.

Massage for a few minutes, up to a few times a day. Stop if baby cries harder or seems to dislike it.

3. Tummy time

Tummy time is not just good for head control. It can also help with gas in babies.

When baby lies on their tummy:

• gentle pressure on the abdomen helps gas move
• they may naturally wriggle and kick, which also helps

Start with very short periods, such as 1 to 2 minutes, several times a day, and always supervise. You can lay baby on a play mat, or on your chest while you lean back. If they are very gassy and miserable, a little tummy time after a nappy change may ease things.

4. Burping positions that actually work

Effective burping baby is one of the best ways to reduce gas before it becomes a problem.

Try all three positions, and see what suits your little one:

1. Over the shoulder

   • Hold baby upright against your chest.
   • Support their head and neck with one hand.
   • Gently pat or rub their back with the other hand.

2. Sitting on your lap

   • Sit baby on your knee, facing sideways or away from you.
   • Support their chest and head by holding their chin in your palm (avoid pressure on the throat).
   • Lean them slightly forward and pat or rub their back.

3. Lying across your lap

   • Place baby tummy-down across your knees.
   • Support their head so it is higher than the chest.
   • Gently rub or pat the back.

Some babies burp quickly. Others need several minutes. Try burping mid-feed and after a feed rather than waiting until the end.

5. Warm compress

A warm (not hot) compress can relax the tummy muscles.

How to do it safely:

• Use a clean flannel or small towel.
• Soak in warm water, then wring out so it is damp, not dripping.
• Test on your own wrist first. It should feel comfortably warm, never hot.
• Place gently on baby’s tummy over their clothes for a few minutes.

Stay right with baby while you do this, and remove it if they seem uncomfortable or if it cools down.

6. The colic hold

The colic hold is popular for both colic and gas.

• Place baby face-down along your forearm, so their tummy rests on your arm.
• Their head should be near your elbow, supported, and slightly higher than their body.
• Use your other hand to support their bottom or back.

You can gently rock, sway, or walk around the room. The mild pressure on the tummy plus movement can help release trapped gas and soothe crying.

Feeding adjustments to reduce gas

You can often ease newborn gas by tweaking how feeds are given, rather than what is in them.

For breastfed babies

• Check the latch
  A deep latch reduces air swallowing. If you hear lots of clicking or see milk dribbling out constantly, ask a midwife, health visitor, or breastfeeding counsellor to watch a feed.

• Try different positions
  Some babies gulp less air when feeding in a more upright position, or in a laid-back breastfeeding position where gravity helps.

• Burp mid-feed
  If baby is very windy, pause halfway through the feed to burp, then offer the breast again.

For bottle-fed babies

• Use a suitable teat flow
  If the flow is too fast, baby gulps. Too slow, they suck harder and swallow more air. You may need to experiment a little to find the right size for their age and feeding style.

• Keep the bottle tilted
  The teat should be full of milk, not half full of air.

• Try paced bottle feeding
  Hold baby more upright, hold the bottle more horizontal, and give small breaks during the feed. This mimics breastfeeding and can reduce air swallowing.

• Burp during and after feeds
  Stop halfway to burp, then again at the end.

Feeding in a slightly upright position, whether breast or bottle, can also help reduce reflux and associated gas.

Gas drops, probiotics, and when to speak to your doctor

There are lots of products marketed for infant gas relief. Some help a bit, some not at all, and the evidence is mixed.

Simethicone gas drops for babies

Simethicone is the active ingredient in many gas drops for babies. It works by breaking up gas bubbles in the stomach and intestines so they are easier to pass.

Key points:

• Generally considered safe for young babies when used as directed
• Some parents see an improvement in wind and discomfort
• Research results are mixed, so it is not a guaranteed solution

Always follow the dosage on the packet and check with your GP, health visitor, or pharmacist before starting any medicine, especially in very young or premature babies.

Probiotics and baby gas

Some parents ask about probiotics for baby gas and baby colic.

• Certain strains, particularly Lactobacillus reuteri (often written L. reuteri), have shown some benefit for colicky, breastfed babies in several studies.
• The evidence is stronger for colic than for simple gas, and it seems to help some babies more than others.

If you are considering probiotics:

• Speak to your GP or health visitor before starting them.
• Choose a product made specifically for infants.
• Give them consistently for a few weeks before judging if they help.

When to see a doctor urgently

Gas in babies is usually harmless, but get medical advice quickly if your baby has:

• a very swollen, tense tummy that feels hard and painful
• vomiting that is green or yellow, or vomiting forcefully (projectile)
• blood in their stools
• a fever, or is unusually sleepy or floppy
• poor feeding, fewer wet nappies, or seems generally unwell

Trust your gut. If something feels off, call your GP, NHS 111 (if you are in the UK), or your local urgent care service.

Final thoughts: you’re not doing anything wrong

Baby gas can make nights feel endless. The grunting, the pulling knees up, the crying out of nowhere – it all looks dramatic, and it can really rattle your confidence.

It does not mean:

• your milk is «bad»
• you chose the wrong formula
• you are feeding «wrong»

Most of the time, it simply means you have a tiny human with an immature digestive system who needs a bit of extra help.

Try a mix of:

• bicycle legs and tummy massage
• tummy time and the colic hold
• experimenting with different burping positions
• adjusting feeding positions and pace

If things still feel overwhelming, or you are unsure whether it is baby gas or baby colic, you do not have to figure it out alone. Speak to your GP, midwife, or health visitor and get some tailored support.

This phase really does pass. Your baby’s gut matures, the gas settles, and one day you realise you cannot remember the last time you did bicycle legs at 3 a.m.