Spitting up is very common in babies. It usually happens because the muscle at the junction between the food pipe and stomach is not yet fully functioning, alongside a small stomach, feeding too much or too quickly, and swallowing air during feeds. These factors allow milk to flow back out through the mouth. This often improves on its own as your baby grows (NHS).
Here, we will share practical guidance to help you manage this issue with confidence. Let's start with the reasons babies spit up frequently.
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What Is Spitting Up?
Spitting up is when milk in the stomach gently flows back out through the mouth, and sometimes the nose, without force. It often happens during or after feeding, especially when a baby feeds too much or too quickly and swallows air along with the milk. You may hear a small gulping sound as the milk comes back up.
Several factors can contribute, including too much milk at each feed, bottle-feeding, physical issues such as tongue-tie, or breathing difficulties. In healthy babies, it often resolves on its own as they become better able to regulate feeding. However, if there are problems or symptoms do not improve, consult a doctor for diagnosis and treatment.
How Is Spitting Up Different from Vomiting?
Spitting up and vomiting can look similar in babies, but there are important differences that help distinguish them:
Spitting up:
- Milk flows back from the stomach into the food pipe.
- It gently comes out through the mouth or nose without force, usually in small amounts.
- Most babies still seem comfortable, without fussiness or pain.
Vomiting:
- Food or liquid is brought up and expelled through the mouth.
- It may come out forcefully or involve heaving.
- The amount is usually larger, and your baby may also seem uncomfortable or tired.
A baby who both spits up and vomits may have several underlying causes, such as stomach problems that cause milk or food to flow back into the lungs or food pipe, physical development, or other health issues that need a doctor's diagnosis.
If your baby has these symptoms, take them to a doctor for an appropriate diagnosis and treatment, especially if their growth is unusual or there are signs of stomach problems.
Causes of Spitting Up
This common issue can have several causes, including:
An immature digestive system: The muscle that closes off a baby's stomach does not yet close tightly, and the stomach is still small, making it easy for milk to flow back up.
Feeding too much or too quickly: Very hungry babies often feed quickly and take in a lot at once, so offer smaller, more frequent feeds.
Swallowing air: This can happen with a poor latch, a bottle nipple that flows too quickly, or when a baby is not burped during and after feeds.
Position and activity after feeding: Lying flat immediately, pressure on the tummy from a tight diaper, for example, or vigorous play after feeding can make spitting up more likely.
Other conditions: These include severe acid reflux or cow's milk protein allergy, which must be diagnosed by a doctor.
Managing spit-up should address the cause, for example by adjusting feed amounts and pacing, using a suitable feeding position, and burping during and after feeds.
How to Manage Spitting Up
Spitting up is common in the first few months of life and usually improves on its own by around 1 year of age. Here are some ways to manage it:
Offer smaller, more frequent feeds, and do not force your baby to finish the bottle.
Burp your baby during and after feeds, for example by holding them over your shoulder and gently rubbing their back.
If you use a baby bottle, choose a nipple with an opening suited to your baby's age and a flow that is not too fast. Tilt the bottle so the nipple stays full of milk to reduce swallowed air.
Do not introduce solid foods or give milk from a cup or spoon to treat spit-up. Complementary foods should generally begin at around 6 months of age. Consult a doctor before changing formula or using a special formula.
If your baby still spits up very frequently after feeding adjustments, or has other unusual symptoms, see a doctor for assessment and appropriate treatment.
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Is Spitting Up Dangerous for My Baby?
Mild spit-up is usually harmless, but monitor and care for your baby closely to check for anything unusual. If you notice a problem, consult a doctor for advice about possible contributing factors, such as overfeeding, an unsuitable bottle, other physical factors, or an unsuitable feeding position.
However, seek medical advice promptly if your baby has forceful projectile vomiting, green or yellow vomit, blood in the vomit, poor weight gain, refusal to feed, unusually excessive crying, fever or diarrhea, or starts spitting up after 6 months of age (NHS). A doctor can examine your baby to make the correct diagnosis and provide treatment. Further investigations, such as imaging, blood tests or other biological tests, may be needed as the doctor considers appropriate.
Caring for Your Baby's Health
Caring for your baby's health is important in helping prevent the frequent spit-up seen in newborns and infants. Good care can also help prevent illnesses and other health problems. Appropriate guidance and advice on caring for your baby to help prevent spit-up include the following:
- Offer small feeds: Give your baby smaller amounts of milk more frequently.
- Burp at every feed: During and after feeding, hold your baby over your shoulder or in an upright seated position and gently rub their back to help release air.
- Keep your baby upright: After feeding, hold your baby upright for a while, around 20–30 minutes, while they are awake and supervised by an adult, to reduce milk flowing back up.
- Use a comfortable feeding position: Let your baby lie or sit in a comfortable position that does not require them to lean too far backward.
- Avoid pressure on the tummy: Avoid diapers or clothing that fit tightly around the tummy, and avoid vigorous play, shaking, or pressing or massaging the tummy immediately after feeding.
- Consult a doctor: If spitting up does not improve, consult a doctor for an accurate diagnosis and appropriate advice.
Precautions: For all sleep, during the day and at night, put your baby on their back on a firm, flat mattress. Do not use pillows or folded fabric to raise their head, anti-reflux pillows or inclined mattresses, and keep blankets, soft toys and cot bumpers out of the cot. Babies who sleep on their backs have natural airway-protection mechanisms, so sleeping on their backs does not make them more likely to choke on milk (AAP). Read more: 5 Things to Avoid While Your Baby Is Sleeping
Try these techniques carefully. If you have further questions or concerns, consult a doctor or childcare specialist. Advice from other parents with experience caring for babies at this stage can also be helpful.
Summary
Spitting up is when milk gently flows back out through a baby's mouth. It usually happens because the stomach and the muscle that keeps milk in it are still developing, combined with feeding too much or too quickly and swallowing air. Contributing factors may include overfeeding, bottle-feeding, physical issues, infant development, or medical conditions such as illnesses or digestive problems. In healthy babies, spitting up often resolves on its own as they become better able to regulate feeding. However, if there are problems or it does not improve, consult a doctor for diagnosis and treatment.
https://www.forbes.com/health/family/baby-spit-up-guide/
https://www.babycentre.co.uk/x554826/my-baby-frequently-vomits-whats-causing-this