"Does the Latch Look Okay?" - What a Lactation Consultant Is Actually Checking
It's one of the most common question lactation consultants hear. But a latch is not something you can fully assess from a photo, a glance across the room, or even a short video. It is a dynamic event that involves your baby's oral anatomy, your breast and nipple tissue, your positioning, your baby's positioning, milk transfer, and your comfort. All at once.
So when a Lactation Consultant sits with you for an appointment, we're not just looking. We're observing, listening, and asking. Here is a walk-through of everything that actually goes into a latch assessment - and why a trained pair of eyes matters more than you might expect.
1. First: Does It Hurt?
This is where we start, every time, without exception.
Pain is the single most important signal that something is not right. Mild initial discomfort as a baby first latches, which is sometimes described as a brief pulling or tugging sensation in the first few seconds, can fall within the range of normal, particularly in the early days as you get used to a baby on your breast and nipple tissue. Pain that persists throughout a feed, causes you to brace or wince, tensing of your shoulders, or overall dread before a feeding is not something to push through. It’s information.
Pain during breastfeeding is strongly associated with nipple trauma, poor latch, and early cessation of breastfeeding. It is also one of the most underreported symptoms, because mothers are so frequently told that it's normal, or that it gets better, or that they just need to toughen up. It does not always get better on its own. Pain is a signal that something is worth looking at more closely.
2. Positioning: Are You Both Set Up to Succeed?
Before we even look at the mouth on the breast, we look at the whole picture - because latch problems are very frequently positioning problems in disguise.
A well-positioned feeding dyad has certain predictable characteristics: Baby’s body is in alignment (ears, shoulders, and hips aligned), baby is tummy-to-tummy with mom, nose is in a sniffing position, head is not being hed=ld or gripped onto, and chin is deep into the breast tissue with a neutral or slight neck extension. Lastly, we look at your comfort. If you are not comfortable, this latch is unsustainable
3. The Latch Itself: What We See at the Mouth
Once we've assessed the position, we look closely at how baby is attached to the breast. We aren’t just looking at the flange of the lip which is so commonly referred to as the cornerstone of a good latch. We are moreso looking at mouth gape angle, tongue position ,asymmetry of the latch, and what the cheeks look like. Only after assessing all of this can we do the visual inspection part of our assessment.
4. Auditory and Feeding Behaviour Cues
A latch assessment isn't only visual. We also listen. We listen for swallowing sounds. It is a very reassuring sign that baby is transferring milk. In the early days, we listen for swallowing particularly after the initial let-down, when milk flow increases. If we hear sustained suckling with very little audible swallowing, transfer may be poor. Luckily we come with a pediatric scale to double-check our assessment. We also listen for clicking sounds. This typically tells us the oral seal is breaking for some reason. We also listen to the general suckling pattern. Did you know that a baby sucking has a rhythm, its not super random. After the initial rapid fluttery style at the beginning of a feed, we would expect a deeper suck-swallow-breathe pattern that is deeper and is accompanied with the appropriate sounds of swallowing.
5. Pre- and Post-Feed Weight (Weighted Feed)
When milk transfer is the concern, we do a weighted feed. All babies can benefit from this, but particularly for babies who are not gaining weight on their growth curve, or babies who are not peeing and pooping appropriately, or babies who fall asleep as soon as they are at the breast without much waking to feed. It’s also for moms who don’t know if their breasts are emptying appropriately. A weighted feed provides objective data that visual observation cannot provide.
We weigh baby before and after a complete feed without changing anything (clothes, nappy). The difference in grams equals the amount of milk transferred in that feed. This takes the guesswork out of "do you think baby is getting enough?" and replaces it with a number we can act on.
6. Oral Anatomy and Function Assessment
If we have any concern about pain, poor transfer, clicking, shallow latch, or falling off the breast, we do an oral assessment - with a gloved finger in baby's mouth.
We're assessing:
The hard and soft palate (shape, height, integrity)
Tongue mobility, strength, and cupping ability
The presence and function of the lingual frenulum
The upper lip frenulum
Sucking strength and coordination
This cannot be assessed visually from the outside. This is why a photograph of a baby feeding cannot tell you what's happening inside the mouth.
7. After the Feed: What Does Your Nipple Look Like?
Once baby comes off the breast, we look at the nipple.
A well-latched feed leaves the nipple round, soft, and roughly the same shape it started. A compromised latch leaves evidence: a pinched or "lipstick" shape, a white horizontal crease, a ridge or blanching. This is one of the most revealing moments of a full latch assessment, and it's one of the last things a casual observer would think to check. If you notice this - even without other symptoms - get a lactation assessment.
So Does the Latch Look Okay?
Maybe. But "looking okay" to an untrained eye misses most of what matters.
It misses whether your nipple is being compressed against baby's hard palate. It misses a lower lip that's rolled under, a tongue that's bunching mid-feed, a suction seal that's breaking every few seconds. It misses the tension in your shoulders that tells us the position isn't working long-term. It misses the absence of swallowing sounds. It misses the lipstick shape that emerges when baby unlatches.
A latch assessment with a trained lactation consultant is not about finding something wrong. It's about seeing the whole picture - that feeding works for both of you, now and over the weeks and months ahead.
Ready for a Real Assessment?
If you're questioning your latch even a little bit, then that question is worth answering properly. You don't need to be in crisis to reach out. Early support is easier than catching up after weeks of pain or supply challenges.
Book a consult and we'll look at everything: not just the latch, but your positioning, your baby's oral function, milk transfer, and your comfort - because all of it matters.