Does Mewing Work for Adults?
This is the most common question from the adult mewing community — and it deserves an honest, nuanced answer rather than a simple yes or no. The truth depends on what you're hoping to achieve and how you define "working."
The Suture Fusion Question
The key physiological fact that determines adult mewing outcomes is the fusion state of the midpalatal suture (MPS) — the joint running down the centre of the palate. When open, this suture can be widened by sustained force (like tongue pressure). When fused, no amount of tongue force will expand the palate.
Research shows considerable variability in fusion timing:
- Some people show partial fusion as early as 25
- Others maintain open sutures into their early 30s
- Fusion is progressive — partially fused sutures may still respond partially
- The only way to know your suture state is CBCT (cone beam CT) imaging — ask a dental professional
💡 Key point: Suture fusion is variable. You may have more plasticity than you think, especially if you're in your 20s. But don't bet on structural bone change — focus on what mewing definitely delivers at any age.
What Adults Definitely Gain
Better Sleep
Nasal breathing established through mewing practice dramatically improves sleep quality, reduces snoring, and lowers sleep apnea risk. This is measurable and significant.
Any ageImproved Breathing
Nasal airway function improves as mouth breathing habits are corrected. Many adults report clearer sinuses, less congestion, and easier breathing within weeks.
Any ageReduced Jaw Tension
Correct resting posture reduces the chronic jaw tension and TMJ strain that many adults carry from poor oral habits. Headaches and jaw soreness often improve.
Any ageBetter Posture
Correct tongue and jaw posture is linked to improved cervical (neck) and overall spinal posture. The chin retracts, the head sits more neutrally — reducing neck pain.
Any ageOptions for Adults Wanting Structural Change
If you're an adult who wants structural palatal expansion, tongue pressure alone won't do it after suture fusion. However, you have real options:
MARPE — Mini-implant Assisted Rapid Palatal Expansion
MARPE is a non-surgical orthodontic procedure where small titanium screws are placed in the palate and a device is used to apply enough force to reopen and expand even a partially fused midpalatal suture. It's effective in adults up to approximately 40 years old and can achieve real palatal widening. It must be combined with mewing and myofunctional therapy for lasting results.
Surgical Expansion (SARPE)
For fully fused sutures where MARPE is insufficient, surgically assisted rapid palatal expansion (SARPE) is an option. A surgeon creates controlled cuts in the palate bone to allow an expander to work. More invasive but highly effective.
Myofunctional Therapy
Working with a certified myofunctional therapist ensures you're mewing correctly and addresses swallowing, breathing, and tongue posture systematically. Recommended for all adults serious about making progress.