Complicated breastfeeding: a study clears the upper lip tie as the cause of difficulties
In Brief
- A scientific study published in JAMA Network Open on February 12, 2024, followed 264 mother-baby dyads born at term, healthy, at the University Hospital of Oulu (Finland).
- 86% of mothers reported breastfeeding difficulties during the first six days, but the 6-month follow-up found no link between the upper lip frenulum and breastfeeding problems.
- Thickness, insertion point, and mobility of the labial frenulum did not increase the risk of complicated breastfeeding, according to the results.
- The study notes fewer breastfeeding difficulties among mothers who had previously breastfed, highlighting the “learning curve” effect.
- The practical message: prioritize a comprehensive assessment and breastfeeding support before considering surgery, in a logic of medically exonerating the upper lip frenulum as the cause of difficulties.
The upper lip frenulum has gained a fame that even some influencers would not have dared claim: with a few clicks, it becomes the prime suspect as soon as breastfeeding falters. Yet, on February 12, 2024, a scientific study published in JAMA Network Open puts this “ideal culprit” back in its place: in full-term healthy infants, the characteristics of the upper labial frenulum are not associated with reported breastfeeding difficulties. The issue goes beyond the anatomical detail. It concerns the rise in frenulotomy requests, the temptation for simple explanations in exhausting situations, and the reality of the postpartum period where every feeding can feel like a sporting challenge without warm-up. In a context where the “medical exoneration” of a frenulum is almost newsworthy, the interest is mainly to reopen the field of possible causes of complicated breastfeeding and to refocus on what helps fastest: careful observation, concrete adjustments, and breastfeeding support, especially in the first weeks.
Upper Lip Frenulum and Complicated Breastfeeding: What the Scientific Study Says, and What It Does Not
The study relied on 264 mother-child pairs followed at the University Hospital of Oulu, Finland, between 2023 and 2024. The included infants were born at term and considered healthy. Researchers assessed the anatomy and mobility of the upper lip frenulum and then compared these observations with breastfeeding experiences reported by mothers, with follow-up up to 6 months. The striking figure is this: 86% of mothers reported breastfeeding difficulties during the first six days. This does not validate a “frenulum” diagnosis; it primarily reminds us that at the start, breastfeeding is often an adaptation phase (and not an entrance test for a perfect baby).
The central result is the absence of an association found between the characteristics of the upper labial frenulum and breastfeeding difficulties. Practically, the frenulum’s thickness, insertion point, and other structural elements did not increase the risk of reported breastfeeding issues. The logic is important: the study does not say “the difficulties are imagined,” it says that, in this specific context, the upper lip frenulum does not behave as an identifiable origin of difficulties. This has a direct impact on the idea that removal would be the automatic response when sucking is laborious.
A nuance matters to avoid shortcuts. The study focuses on full-term healthy infants. It does not explore all possible clinical situations nor all combinations of factors (maternal pain, engorgement, strong ejection reflex, fatigue, difficult delivery, etc.). This does not detract from the main message: blaming the upper lip frenulum as the sole cause becomes a fragile hypothesis when the data do not support it.
Why a “no link” Result Is Useful (Even If It Frustrates Fans of Instant Solutions)
A negative result is sometimes more actionable than it appears. It prevents getting locked into an appealing but unproductive track. When a family looks for the origin of difficulties, the explanation “it’s the frenulum” has the advantage of being visible, shareable, and compatible with a short intervention. The problem is that breastfeeding is not IKEA furniture: even with a suspicious part, there remain adjustments, positions, rhythms, and biological reactions that matter.
The study reinforces a clinical approach: observe the feeding, listen to the experience, and do a full assessment before any decision. This is not a theoretical stance. Persistent pain, a baby falling asleep at the breast, tongue clicking, insufficient weight gain, or overactive lactation may come from different mechanisms. When the upper labial frenulum is “exonerated” in the data, energy can be better invested elsewhere, often with faster benefits.
Breastfeeding Difficulties: Common Causes to Review Before Blaming Anatomy
When breastfeeding is complicated, the first temptation is to find a missing piece. Yet, the most common breastfeeding problems often involve a combination of factors. Feeding is a two-way gesture: the baby learns, the maternal body adjusts, and the environment can help… or complicate. Putting all the blame on the upper lip frenulum ignores very concrete elements that sometimes correct themselves within 24 to 72 hours with good support.
One point also emerges in the study: breastfeeding difficulties are less frequent among mothers who have already breastfed. This observation does not mean “first-time mothers do worse.” It illustrates a reality: recognizing a good latch, distinguishing nutritive suckling from comfort suckling, anticipating engorgement, or spotting a drowsy baby can be learned. Experience serves as a GPS in a moment when fatigue blurs signal reading.
Practical and Realistic Checklist of Possible Causes (Without Turning the Home into a Medical Office)
Without playing gum detective with a flashlight, some elements are regularly involved in breastfeeding difficulties. A list helps structure the assessment, especially after a fifteen-minute night and cold coffee since yesterday.
- Breast position and latch: ear-shoulder-hip alignment, wide-open mouth, chin supported, everted lips.
- Engorgement or nipple edema: very tight breast, hard-to-grasp areola, more painful feedings.
- Strong ejection reflex: baby chokes, releases the breast, swallows air, restless feedings.
- Newborn drowsiness: short feedings, weak sucking, difficulty staying awake.
- Maternal pain: cracks, vasospasm, hypersensitivity, which alter posture and feeding frequency.
- Rhythm and frequency: feedings too spaced at first, or conversely, baby “glued” with ineffective milk transfer.
The lingual frenulum is often mentioned in online discussions, sometimes rightly, sometimes as a snowball effect. The key point is not to confuse visual correlation with cause. A “visible” frenulum is not automatically a “restrictive” frenulum, and a restrictive frenulum is not the only candidate. A serious clinical evaluation focuses on function (mobility, sucking, milk transfer), not only form.
A simple observation often provides clues: pain decreases after latch correction, air noises disappear with a different position, baby swallows more regularly when the breast is less tight. These markers guide toward concrete solutions without immediately jumping to a unique anatomical hypothesis.
Video demonstrations of positioning and latch help visualize what is hard to describe by SMS at 3 a.m. The idea is not to apply a “magic posture” but to spot two or three adjustments that change the sucking dynamics and reduce pain.
Frenulotomy and Frenulum Hype: Between Fad, Parental Anxiety, and Clinical Prudence
The debate on oral frenula has grown with social media: frenulum photos, before/after testimonials, and the implicit promise of a quick fix. In this context, frenulotomy requests have increased to the point that doctors and the National Academy of Medicine have raised alarms about the risk of too systematic recourse to this procedure, presented as an easy solution while evidence remains insufficient for a routine recommendation (National Academy of Medicine, statement April 4, 2024). This reminder mainly aims to restore order: even a brief intervention must be based on a solid indication.
The problem is not that parents seek a cause. The problem is the response hierarchy: starting with frenulum release before securing the basics (latch, pain, milk transfer, weight follow-up) exposes families to disappointment and sometimes unnecessary guilt. The baby did not “fail” breastfeeding; the system sometimes skipped steps.
What the “Medical Exoneration” of the Upper Lip Frenulum Changes in the Decision
The Finnish publication provides a specific element: the upper lip frenulum, as a structure, does not explain the reported breastfeeding difficulties in this cohort. This does not turn the labial frenulum into decorative detail but removes fuel from the idea of difficulty origins centered on it. In real life, this can help defuse escalation: difficulty → zoomed photo → diagnosis in comment → quick surgical appointment.
Pediatrician and neonatologist Outi Aikio, in the statement associated with the article, stresses the need for a complete evaluation and the importance of breastfeeding support during the first weeks, when breastfeeding difficulties are frequent (JAMA Network Open, February 12, 2024). The message is clear: if feeding is difficult, support comes before the scalpel.
Comparative Table: What We Observe, What We Measure, and What We Do First
To avoid “all anatomy,” a table helps distinguish what stems from a feeling, a clinical sign, and a priority action. Numeric data serve as simple guides, without replacing medical follow-up.
| Observed Element | Concrete Measure/Reference | Priority Action | Reassessment Delay |
|---|---|---|---|
| Nipple pain | Persistent beyond 30 to 60 seconds after latch | Latch correction + observation of a complete feeding | 24 to 48 h |
| Baby falls asleep quickly | Frequent but short feedings (< 10 min) with few swallows | Stimulation, skin-to-skin, breast compression during feeding | 24 h |
| Engorgement | Very tight breast, difficult-to-grasp areola | Areola loosening (short manual expression) + feeding | 12 to 24 h |
| Suspicion of restrictive frenulum | Functional evaluation (mobility, suction, transfer), not only visual | Assessment by a trained professional + collegial decision if surgery is considered | Depending on progress, often 48 h to 7 days |
This type of approach reduces the risk of confusing an anatomical marker and a cause. It also protects parents from a “intervention first, explanations later” path, which often ends up costing time, energy, and sometimes trust.
Video content produced by health professionals often helps clarify the difference between a visible frenulum, a restrictive frenulum, and a difficulty in milk transfer related to latch. They also help find the right words for what happens during feeding.
Breastfeeding Support: The Most Energy-Efficient Tool When Breastfeeding Is Complicated
When complicated breastfeeding sets in, breastfeeding support is not a “comfort” bonus. It is a clinical and logistical lever: it structures observations, proposes adjustments, and organizes follow-up. It also helps reduce mental load. A family does not need to become a specialist in the upper lip frenulum or the lingual frenulum for feedings to become functional again.
Quality support relies on simple, repeated actions. Observation of a feeding in real conditions is worth more than a series of photos. The latch, position, swallowing rhythm, baby’s behavior upon release, and nipple condition after feeding provide information. Weight and diaper monitoring, when done without obsession, completes the picture.
Concrete Examples of Adjustments That Make a Difference (Without Instant Promise)
Some adjustments have a rapid effect on pain. Others mainly improve milk transfer efficiency and baby’s satiety. When breastfeeding is difficult, these details matter because they reduce the repetition of ineffective feedings, often confused with “lack of milk.”
Asymmetric latch (clear nose, well-tucked chin), alternating positions (cradle, football hold, lying down position), or breast compression during weak sucking phases are practical tools. Skin-to-skin often increases alertness and coordination. Managing the ejection reflex (inclination, semi-reclined position, pauses) reduces agitation and swallowed air.
When Should Evaluation Be Pushed Further?
A more in-depth evaluation is justified when pain persists despite a good latch, when milk transfer remains low, or when weight gain is concerning. In such cases, examination of the oral cavity is warranted, including functional analysis of a lingual frenulum if signs are consistent. The notion of “origin of difficulties” remains multifactorial: feeding is not a single piece to replace, it is a system to adjust.
In this logic, the “medical exoneration” of the upper lip frenulum helps prioritize efforts: first optimize the basics, then explore anatomical hypotheses methodically, and only afterward discuss surgery if a clear indication emerges.
What Do We Say About It?
The study published in JAMA Network Open provides a useful signal: in full-term healthy babies, the upper lip frenulum does not appear as the origin of breastfeeding difficulties. In fact, this encourages stopping “zooming in” on the mouth at the first difficult feeding and prioritizing observation and breastfeeding support. The decision for frenulotomy benefits from being rare, argued, and preceded by a complete functional assessment, because most early breastfeeding problems resolve through concrete adjustments and close follow-up. Parents looking for a quick answer may see this as a constraint, but it is often the most effective way to improve comfort and intake.
Can the Upper Lip Frenulum Still Hinder Sucking?
A frenulum can be visible without being restrictive. The Finnish study published on February 12, 2024, in JAMA Network Open found no association between the characteristics of the upper lip frenulum and reported breastfeeding difficulties in full-term healthy infants. In practice, the assessment focuses mainly on function (latch, swallowing, milk transfer) rather than appearance alone.
What Is the Difference Between Upper Lip Frenulum and Lingual Frenulum?
The upper lip frenulum connects the upper lip to the gum, while the lingual frenulum connects the tongue to the floor of the mouth. Both may be involved in breastfeeding difficulties, but they are not diagnosed from a photo. A useful analysis focuses on mobility, sucking, maternal pain, and milk transfer, with feeding observation.
When Should You Consult If Breastfeeding Is Complicated From the First Days?
If pain is significant, if the baby consistently falls asleep at the breast, or if feedings seem endless without signs of satiety, prompt help is needed. A breastfeeding support professional can observe a feed, correct the latch, and organize follow-up. This kind of support is often appropriate in the first week, a period when breastfeeding difficulties are common.
Is Frenulotomy Always Useless in Case of Breastfeeding Problems?
No, a release can be considered in some cases, but it should not be automatic. The cautionary reminder mainly aims to avoid a systematic response to a multifactorial situation. A solid decision is based on a complete assessment, concordant functional signs, and follow-up, to avoid treating an anatomical detail without addressing the overall feeding mechanics.
