07/30/2026
Have you ever noticed your baby's top lip curling under during a latch?
For years, we've been told to simply flip the lip out. While that can absolutely be helpful in some situations, it's worth asking **why the lip is tucked under in the first place.**
In many babies, a curled-under lip is a compensation—not the root problem.
When the tongue isn't able to extend, elevate, or cup around the ni**le as effectively as it should, the lips often step in to help stabilize the latch. That tucked lip may be your baby's attempt to get more milk when they're struggling.
Because of that, repeatedly flipping the lip out may not always solve the problem. In some cases, it can be like taking away a crutch before someone has regained the strength to walk without it. If the underlying tongue function hasn't improved, the lip will often curl right back under.
That said, this is where nuance matters.
If a tucked lip is contributing to pain or ni**le damage, by all means, gently flip it out. Comfort matters, and sometimes that simple adjustment makes an immediate difference.
But if the lip keeps returning to that position, don't stop at the symptom. Instead, ask what your baby's body is trying to accomplish with that compensation. Looking at tongue function, positioning, oral motor skills, and the mechanics of feeding often provides far more answers than focusing on the lip alone.
The goal isn't simply to create a "picture-perfect" latch, it's to understand *why* your baby is latching the way they are.
When we treat the cause instead of just the compensation, feeding becomes easier for everyone.