Causes of Colic in Infants: Diet, Feeding, and More

December 16, 2025 By Woodwards.
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Introduction

Few things unsettle new parents more than hours of inconsolable crying. One of the first questions that arises is: what causes colic in a newborn? Colic is common, usually beginning within the first weeks of life and resolving on its own by around three to four months of age. While not harmful in the long run, the intensity of crying can overwhelm families and create stress at home. Understanding the causes of colic in infants helps parents feel more equipped to handle this phase with confidence and care.[1]

Defining Colic and Diagnostic Criteria

Doctors often use the “Rule of Threes” to describe colic: crying for more than three hours a day, on more than three days per week, lasting for at least three weeks, in an otherwise healthy baby.[2] Importantly, colic is not a disease but rather a temporary developmental stage. Diagnosis is made after ruling out other medical conditions, such as reflux, ear infections, or food allergies, allowing parents to focus on comfort measures instead of fearing a serious illness.[3]

Multifactorial Causes of Colic

Research shows there isn’t a single answer to the reasons for colic in infants. Instead, colic arises from a mix of factors:

  • Digestive system immaturity
  • Neurological sensitivity
  • Environmental triggers
  • Household and parental stress [4]

This combination explains why soothing one baby may require different strategies compared to another.

Gastrointestinal and Digestive Factors

One of the strongest theories relates to digestion. Newborns have immature digestive systems that take time to adjust after birth. Some common contributors include:

  • Gas and air swallowing: Babies swallow air during feeding or crying, which can lead to painful bloating and newborn colic pain.[5]
  • Gut motility: Slower movement of food through the intestines can increase discomfort.
  • Milk sensitivities: Some infants are sensitive to proteins in cow’s milk, which may cause gas, acidity, and fussiness that mimic colic symptoms.[6]
  • Gut microbiome: Emerging studies show that the balance of bacteria in a baby’s gut may influence both digestion and crying episodes.[7]

Parents often notice that colic episodes peak in the evening, when the baby’s tummy is full and gas tends to build up.

Neurological and Behavioural Factors

Crying is a newborn’s primary means of communication, but babies with colic may have heightened sensitivity. Their nervous systems are still developing the ability to regulate responses to discomfort. This can make minor sensations—like hunger, overstimulation, or trapped gas—feel overwhelming, leading to longer crying bouts.[8]

Colic also tends to peak at 6–8 weeks of age, when babies are going through rapid brain and nervous system development.[9]

Environmental and Psychosocial Triggers

Colic is not just about the baby’s body; the environment also influences it. Common triggers include:

  • Overstimulation: Too much light, noise, or activity can upset newborns.[10]
  • Parental stress: Babies are highly attuned to their caregivers’ moods. When parents are anxious or exhausted, infants may also become unsettled.[11]
  • Second-hand smoke exposure: Studies show that babies exposed to tobacco smoke are more likely to develop colic.[12]

Creating a calm and predictable environment can significantly reduce the frequency of crying spells.

Feeding and Dietary Interventions

Gentle feeding habits are among the most effective ways to reduce colic discomfort. Helpful strategies include:

  • Paced bottle feeding to prevent gulping air
  • Proper latch during breastfeeding to reduce air intake
  • Frequent burping breaks during feeds
  • Keeping the baby upright after feeding to reduce reflux

Some breastfeeding mothers notice improvement when they temporarily eliminate dairy or other common allergens from their diet. For formula-fed infants, paediatricians may suggest hydrolysed or specialized formulas if sensitivities are suspected.[13][14]

In addition, probiotics such as Lactobacillus reuteri have shown early promise in reducing crying duration, although results vary.[15]

Gentle Soothing Approaches

Every baby responds differently, but time-tested soothing methods can help, such as:

  • Swaddling in a light blanket
  • White noise or rhythmic sounds
  • Rocking or gentle swinging
  • Warm baths
  • Tummy time for releasing gas

Alongside these, families across generations have trusted Woodward’s Gripe Water—a gentle, over-the-counter herbal preparation known to relieve stomach pain caused by gas, acidity, and indigestion. Parents often find that gripe water helps settle their baby faster, offering comfort during colicky episodes. When used responsibly as part of a broader soothing routine, it can provide much-needed relief for both baby and family.[16]

Parental and Household Factors

The family environment plays a big role in how colic is experienced. Maternal anxiety, depression, or lack of sleep can heighten stress levels, which in turn may worsen crying episodes. Support from partners, extended family, or parenting groups can make a meaningful difference.

Simple household steps—such as reducing noise, dimming lights, avoiding smoke exposure, and practicing self-care—help create a calmer atmosphere that benefits both parent and child.[11][12]

Minimising Colic Risk

While colic cannot always be prevented, parents can adopt practical steps that reduce its intensity:

  • Stick to calm, predictable feeding routines
  • Burp frequently and use upright positioning
  • Avoid exposure to cigarette smoke
  • Keep the baby’s environment soothing and consistent
  • Practice parental self-care to reduce stress

These measures, combined with trusted remedies like Woodward’s Gripe Water, provide families with a well-rounded approach to alleviating newborn colic pain.

When to Seek Medical Help

Though colic is generally harmless, certain red-flag symptoms require urgent evaluation:

  • Fever above 38°C
  • Persistent vomiting, especially if green or projectile
  • Bloody stools
  • Refusal to feed
  • Breathing difficulties
  • Poor weight gain or lethargy

If these occur, parents should contact a doctor immediately to rule out more serious conditions.[17]

Recommendations for Parents

  • Establish consistent soothing routines
  • Use gentle feeding techniques and burping
  • Create a calm environment for the baby
  • Lean on family and support systems to reduce stress
  • Use trusted remedies like Woodward’s Gripe Water to provide gentle digestive relief when fussiness is linked to gas or indigestion

Remember: colic is a passing phase. With informed care and supportive practices, families can navigate it more confidently.

Conclusion

In short, what causes colic in a newborn is a combination of digestive immaturity, heightened sensitivity, and environmental triggers. While challenging, colic is temporary and resolves naturally with time. By blending modern knowledge with traditional, trusted approaches like Woodward’s Gripe Water, parents can soothe their baby’s discomfort and restore calm to the household. Compassion, patience, and simple remedies go a long way in transforming this difficult stage into a manageable one.

References

  1. Wolke D, Bilgin A, Samara M. Systematic review and meta-analysis: fussing and crying durations and prevalence of colic in infants. J Pediatr. 2017;185:55-61.e4.
  2. Johnson JD, Cocker K, Chang E. Infantile colic: recognition and treatment. Am Fam Physician. 2015;92(7):577-582.
  3. Mayo Clinic Staff. Colic — Symptoms & causes. Rochester (MN): Mayo Clinic; 2022.
  4. Medscape. Colic Treatment & Management. 2024.
  5. Gordon M, Biagioli E, Sorrenti M, et al. Dietary modifications for infantile colic. Cochrane Database Syst Rev. 2018;(10):CD011029.
  6. Biagioli E, Tarasco V, Lingua C, et al. Pain-relieving agents for infantile colic. Cochrane Database Syst Rev. 2016;(9):CD009999.
  7. Sung V, D’Amico F, Cabana MD, et al. Lactobacillus reuteri to treat infant colic: individual participant data meta-analysis. Pediatrics. 2018;141(1):e20171811.
  8. Nutrition Guide for Clinicians. Infantile Colic. 2025.
  9. Ohmura N, Okuma L, Truzzi A, et al. A method to soothe and promote sleep in crying infants utilizing the transport response. Curr Biol. 2022;32(20):4521-4529.
  10. National Institute on Drug Abuse. Effects of maternal smoking on infant health. 2023.
  11. Cleveland Clinic. Colic Symptoms, Causes & Solutions. 2025.
  12. Indian Pediatrics. Infantile Colic: An Update. 2018;55(6):579-87.
  13. BMJ. Probiotics for Infantile Colic. 2014.
  14. JPEDRES. Infantile colic: Risk factors and parental variables. 2024.
  15. HealthyChildren.org. When to call the doctor for your infant. 2024.
  16. Garrison MM, Christakis DA. A comparison of common interventions for the treatment of infantile colic. J Pediatr. 2015 Jul;167(1):17-22.e1. doi:10.1016/j.jpeds.2015.03.032.
  17. MSD Manual Consumer Version. Colic. 2025.

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