Colic affects up to one in four newborns, and while no single strategy guarantees prevention, several evidence-based steps can meaningfully lower the risk or reduce its severity. The condition is defined by the “rule of three”: crying that lasts at least 3 hours a day, 3 or more days a week, for over 3 weeks. It typically peaks around 6 weeks of age and resolves by 3 to 4 months. That timeline feels endless when you’re living through it, so the earlier you adopt preventive habits, the better your chances of avoiding the worst of it.
Why Colic Happens in the First Place
Colic isn’t caused by one thing. It’s a collision of immature digestion, developing gut bacteria, swallowed air, and sometimes food sensitivities. Colicky infants tend to have more gas-producing bacteria like E. coli and Klebsiella in their intestines, and fewer of the beneficial strains like Bifidobacterium and Lactobacillus that help calm inflammation. This bacterial imbalance creates excess gas and gut discomfort, which drives the prolonged crying episodes parents recognize as colic.
Understanding this helps explain why prevention strategies tend to focus on two things: getting the right bacteria into your baby’s gut early, and minimizing the amount of air and irritants that reach it.
Use a Probiotic Early
The most studied preventive supplement for colic is a specific strain of beneficial bacteria called L. reuteri DSM 17938. In clinical trials on breastfed infants, babies given this probiotic were significantly more likely to experience at least a 50% reduction in daily crying time compared to those given a placebo, with measurable differences appearing as early as 7 days. The effective dose in studies ranged from 100 million to 400 million colony-forming units per day, typically given as drops.
This probiotic works by helping to rebalance the gut, crowding out the gas-producing bacteria that are more common in colicky infants. The evidence is strongest for breastfed babies. If you’re formula feeding, the data is less clear, though the mechanism is the same. Ask your pediatrician about starting drops in the first few weeks of life rather than waiting for symptoms to appear.
Adjust Your Diet If You’re Breastfeeding
Cow’s milk protein in a breastfeeding mother’s diet is the most consistently identified dietary trigger for infant colic. The proteins pass through breast milk and can irritate a baby’s developing digestive system. Studies have found that removing cow’s milk from a mother’s diet reduces colic symptoms in a meaningful percentage of affected infants.
Beyond dairy, some research suggests that other common allergens may contribute. Caffeine, chocolate, eggs, and nuts have all been flagged as potential irritants, though the evidence is strongest for cow’s milk specifically. If colic runs in your family or your baby is showing early signs of fussiness, a trial elimination of dairy for two weeks is a reasonable first step. You’ll want to ensure you’re still getting enough calcium through other sources or a supplement during that period.
Master Paced Bottle Feeding
For bottle-fed babies, how you feed matters as much as what you feed. Paced feeding is a technique designed to slow milk flow and minimize the amount of air your baby swallows, both of which directly reduce gas buildup. Here’s how it works:
- Use a slow-flow nipple. Faster nipples force babies to gulp, pulling in more air with each swallow.
- Hold your baby nearly upright with their head and neck supported, rather than reclining them back.
- Keep the bottle horizontal so the nipple is only half full of milk. This prevents gravity from flooding the baby’s mouth.
- Let the baby initiate. Touch the nipple to their cheek or upper lip and wait for them to open wide. Don’t push the nipple in or tilt the bottle up once they latch.
- Watch for stress signals. Gulping, wide eyes, splayed fingers, or milk leaking from the corners of the mouth all mean your baby needs a break. Lower the bottle so the nipple empties but stays in the mouth, then resume when the baby starts sucking again.
- Burp during and after feedings. Don’t wait until the bottle is finished. Pausing to burp midway releases trapped air before it moves deeper into the gut.
This approach mimics the natural flow of breastfeeding, where milk comes in waves rather than a continuous stream. Babies who pace their own feeding tend to swallow less air and stop when they’re full rather than overeating, both of which reduce the conditions that lead to colic.
Consider a Hydrolyzed Formula
If you’re formula feeding and your baby is showing signs of colic, the type of formula can make a significant difference. Extensively hydrolyzed formulas, where the cow’s milk proteins are broken down into much smaller fragments, have been shown to reduce crying duration and colic symptoms substantially compared to standard formulas.
A meta-analysis of six studies found that infants on hydrolyzed formula were nearly five times more likely to improve than those on regular formula. In one trial, babies on the hydrolyzed version had their crying time drop by nearly two hours more per day than the control group. In another, crying fell from over 6 hours at baseline to under 4 hours. These are not subtle differences.
Soy-based formulas have also shown some benefit, but pediatric guidelines generally advise against using them for colic because soy itself is a significant allergen in infancy. If a standard formula seems to be contributing to your baby’s distress, a hydrolyzed formula is the safer switch.
Avoid Tobacco Smoke Exposure
Mothers who smoke are twice as likely to have infants with colic. The link holds for both prenatal nicotine exposure and secondhand smoke after birth. Nicotine affects gut motility and may alter the developing gut microbiome, creating conditions favorable to colic. If anyone in the household smokes, keeping it entirely away from the baby (not just out of the same room, but off clothing and out of the car) reduces one clear and modifiable risk factor.
Reduce Air Intake Beyond Feeding
Swallowed air isn’t just a bottle-feeding problem. Babies who cry for long stretches swallow more air, which creates more gas, which causes more crying. Breaking this cycle early matters. Responding quickly to early hunger cues (rooting, hand-to-mouth movements) rather than waiting for full-blown crying means the baby is calmer at the start of a feed and swallows less air during it.
After feeding, holding your baby upright for 15 to 20 minutes helps trapped air rise and escape through burping rather than traveling through the intestines. Gentle tummy time during awake periods also helps move gas through the system. Some parents find that “bicycle legs,” gently pumping the baby’s legs in a cycling motion, provides relief when gas is building up.
What Prevention Realistically Looks Like
No combination of strategies eliminates colic entirely for every baby. Some infants will develop it despite doing everything right, because their gut bacteria, nervous system maturity, and temperament all play roles that can’t be fully controlled. But the cumulative effect of early probiotics, careful feeding technique, appropriate formula choice, maternal dietary awareness, and smoke-free environments gives your baby the best odds. Most colic resolves on its own by 3 to 4 months as the gut matures and bacterial balance stabilizes. The goal of prevention is to shorten that window and reduce its intensity while you wait for biology to catch up.