Mewing for Kids: What’s True, What’s Nonsense, and What Actually Works
By Dr. Mohamed Hasab — Specialist Orthodontist, myPediaclinic Dubai
A fourteen-year-old boy walked into my consultation last month, shoulders squared, jaw thrust forward in an unnatural position, and said: “I need your help optimising my mewing.” His mother looked confused. She’d watched him spend hours in his room doing tongue exercises from TikTok videos for three months. He was convinced he was reshaping his jawline. She brought him to me because she wanted a professional opinion.
This scene is now playing out in orthodontic offices worldwide. “Mewing” — a tongue posture technique claiming to dramatically reshape the face — has become one of the biggest social media trends of the last few years. Teens, especially boys, are following mewing protocols in pursuit of sharper jawlines and better facial aesthetics.
What’s actually true about mewing? What’s pseudoscience? What matters for real facial development? This article separates fact from fiction — with a focus on what parents of teens need to know.
What Is Mewing?
Mewing is a technique developed by British orthodontist Dr. John Mew and his son Dr. Mike Mew. It involves maintaining a specific tongue posture — the entire tongue pressed against the roof of the mouth (palate) — along with related practices like closed-lip breathing, proper swallowing, and good head posture.
The claims associated with mewing range from modest to extreme:
- Can improve facial aesthetics
- Can create a sharper jawline
- Can reshape the face of adults
- Can treat sleep apnoea
- Can prevent or even reverse orthodontic problems
- Can replace traditional orthodontic treatment
As with most things on social media, these claims vary wildly in accuracy.
The Kernel of Truth
Let me be honest: there’s real science underlying the broad concept of proper oral posture and its impact on facial development — at least in growing children.
Established facts:
- Tongue position at rest affects upper jaw development in growing children
- Normal tongue posture involves resting against the palate
- Mouth breathing and tongue thrust are associated with narrow jaw development
- Myofunctional therapy (which includes tongue posture work) has genuine clinical applications
- Nasal breathing supports healthier facial development than mouth breathing
- Proper swallowing pattern matters for oral health
These are real, evidence-based concepts. Orthodontists have discussed and worked with them for decades. In that sense, mewing isn’t entirely inventing something — it’s repackaging and oversimplifying real orofacial myofunctional concepts.
Where Mewing Goes Wrong
The problem isn’t the basic concept. The problem is the extent of claims and the misapplication for adults and teens past growth.
Claim: Adults Can Reshape Their Face Through Mewing
Reality: Facial bones in adults are fused and don’t remodel significantly from tongue pressure. The dramatic “before and after” photos on TikTok usually involve:
- Camera angles and lighting changes
- Weight loss revealing jawline
- Muscle toning from related exercises
- Expression and posture changes (tucked chin vs protruded)
- Time — natural maturation
- Sometimes digital filters
Actual bone remodeling from tongue pressure in an adult? Negligible. Teens approaching 18? Minimal.
Claim: Mewing Replaces Orthodontic Treatment
Reality: No. Teeth move when gentle continuous force is applied to them — that’s how orthodontic treatment works. Tongue pressure doesn’t produce the specific, controlled forces needed to align crooked teeth. You cannot mew your way out of needing braces.
Claim: Mewing Cures Sleep Apnoea
Reality: Sleep apnoea has multiple causes including soft tissue obstruction, bone structure, weight, age, and more. While nasal breathing and proper tongue posture can contribute to better airway function, mewing alone doesn’t cure sleep apnoea. This claim can be dangerous if it causes people to avoid proper medical evaluation and treatment.
Claim: Incorrect Mewing Damages Your Face
Reality: “Incorrect mewing” damaging you is largely mythology. Tongue posture adjustments are unlikely to harm anyone. This claim is often used to pressure people into buying expensive “mewing courses” or coaching.
Claim: Dramatic Results in Weeks or Months
Reality: Even in growing children where oral posture genuinely affects development, changes happen slowly — over years of consistent proper posture. Dramatic changes in weeks are not biologically plausible.
What Works: Real Orofacial Myology
Setting aside the social media hype, there IS a legitimate clinical discipline called orofacial myofunctional therapy (OMT). Licensed myofunctional therapists work with children and adults to correct:
- Tongue thrust
- Mouth breathing
- Improper tongue resting position
- Poor swallowing patterns
- Weak oral muscles
This is NOT mewing. It’s evidence-based therapy provided by trained clinicians, used alongside dental, orthodontic, and medical care.
Key differences:
- Clinical assessment before treatment
- Individualised programs
- Evidence-based techniques
- Integration with other care
- Realistic expectations
If your teen is interested in tongue posture and facial development, myofunctional therapy with a qualified provider is the legitimate path — not TikTok mewing.
The Growth Window That Matters
Here’s the single most important fact about oral posture and facial development:
Craniofacial growth is largely complete by late adolescence. Meaningful skeletal changes from oral posture are only realistic during active growth — roughly from birth through age 16–18 for most children, slightly later for some boys.
During this window, proper oral posture (tongue on palate, nasal breathing, lips together) can support normal facial development. This is why pediatric myofunctional therapy is valuable when habits are causing problems.
After growth is complete, the window is closed. No amount of tongue positioning will reshape adult bone structure.
Most TikTok mewing enthusiasts are 16–25 — often past the effective window for skeletal change.
Should Teens Practise Proper Oral Posture?
Yes — absolutely. But the framing matters. Rather than “mewing for a better jawline,” the framing should be:
- Breathe through your nose, not your mouth
- Rest your tongue on the roof of your mouth
- Keep lips gently closed at rest
- Swallow with your tongue going up, not forward
- Maintain good posture
These are foundational aspects of healthy oral function. They support breathing, sleep, digestion, speech, and facial development. They’re worth practising regardless of cosmetic goals.
If you can get your teen to do these because of mewing enthusiasm, fine — the behaviours are genuinely beneficial. Just be realistic about what they’ll accomplish.
When Mewing Concerns Me Clinically
As an orthodontist, I worry when:
1. It Replaces Proper Treatment
Teens convinced mewing will fix their malocclusion avoid orthodontic evaluation. Problems that were easy to fix at age 12 become complex or impossible to fix at age 20.
2. It Creates Unrealistic Expectations
Teens become obsessed with their jawline. They practise hours daily. They see no change (or only see what they want to see) and become frustrated or depressed.
3. It Delays Medical Evaluation
Sleep issues, breathing problems, or TMJ concerns deserve medical assessment — not internet self-treatment.
4. It Fuels Body Dysmorphia
Constant focus on jaw/face measurements and comparisons feeds obsessive body image patterns. Some young people develop clinical body dysmorphia around facial features.
5. It’s Combined With Extreme Claims
“Hard mewing,” “chewing hard foods for jaw development,” “face pulling” — these extremes have no evidence base and can sometimes cause injury.
What I Tell Teenage Patients
When a teen comes in mentioning mewing, here’s my standard conversation:
- “The underlying concept — proper tongue posture and nasal breathing — is legitimate and worth practising.”
- “The dramatic claims you’re seeing on social media are exaggerated or false.”
- “Your face is still growing, so healthy oral posture can support normal development. But the changes are gradual, not dramatic.”
- “If you want a significantly different jaw or bite, that’s orthodontic territory — we can evaluate what’s realistic.”
- “If you have real concerns about sleep, breathing, or oral function, let’s address those with appropriate assessment rather than self-treatment.”
- “Don’t spend hours per day on this. It becomes obsessive and doesn’t accomplish more than 15 minutes of thoughtful practice.”
- “Avoid anyone selling you mewing courses, coaching, or devices. The underlying techniques are freely available and basic.”
What Parents Should Know
If Your Teen Is Into Mewing
- Don’t dismiss it entirely — the underlying posture is genuinely good
- But help them develop realistic expectations
- Discourage obsessive practice
- Watch for signs of body dysmorphia or obsession
- Consider an orthodontic evaluation if they’re concerned about their actual alignment
- Address any real underlying issues (mouth breathing, tongue thrust, bite problems) with appropriate professional help
Signs to Take Seriously
- Hours daily focused on jaw appearance
- Comparing themselves obsessively to online influencers
- Refusal to eat normally (believing it affects facial shape)
- Seeking extreme methods (bone smashing, face pulling, taping)
- Anxiety or depression related to facial appearance
- Avoiding professional evaluation
These suggest body dysmorphia concerns — which deserve psychological support alongside any physical interventions.
The Real Evidence Base
What does actual research say about tongue posture, mouth breathing, and facial development?
Established Research
- Chronic mouth breathing in children is associated with narrower facial development
- Airway obstruction (enlarged adenoids, etc.) can alter facial growth patterns
- Myofunctional therapy can improve orthodontic treatment outcomes
- Tongue position affects palatal development
- Correcting mouth breathing can improve sleep and behaviour
NOT Established
- Dramatic adult facial remodeling from tongue posture
- Specific “correct” mewing techniques as promoted online
- Cure of sleep apnoea by tongue posture alone
- Replacement of orthodontic treatment by tongue posture
- Most “before and after” claims
When Real Treatment Is Needed
If you or your teen are noticing issues that mewing supposedly addresses — jaw asymmetry, narrow face, crowded teeth, sleep problems, mouth breathing — these deserve proper professional evaluation:
- Orthodontist for tooth and jaw alignment
- ENT for airway and breathing issues
- Sleep specialist for sleep-disordered breathing
- Myofunctional therapist for tongue/swallowing patterns
- Pediatric dentist for growing children
Real problems need real assessment and real treatment. DIY approaches rarely achieve what professional care can.
The Social Media Influence
Mewing has become profitable for content creators. Entire YouTube channels, Instagram accounts, and TikTok personalities monetise the content — selling courses, coaching, devices, and books. This commercialisation distorts the information available to teens.
As parents, help your teen think critically:
- Who’s making this claim?
- What are they selling?
- What’s their training or credentials?
- Are the before/after photos legitimate?
- Do qualified professionals support these claims?
A qualified orthodontist speaking honestly about limitations may not be as exciting as a YouTube personality promising dramatic change. But they’re a more reliable source.
Frequently Asked Questions
Q: My 15-year-old is obsessed with mewing. Should I be worried?
Interest in mewing isn’t inherently concerning. Obsession — hours daily, social withdrawal, body image distress — is. Have an honest conversation about realistic expectations. Consider orthodontic evaluation if they’re concerned about their teeth/face, and mental health support if obsession seems severe.
Q: Can mewing actually change my teen’s face?
In growing children, proper tongue posture (including through mewing or myofunctional therapy) can support normal facial development. In teens near or past growth completion, significant change is unlikely.
Q: My teen’s mouth breathes. Is mewing a solution?
Mouth breathing often has identifiable causes — enlarged tonsils, allergies, deviated septum, nasal obstruction. These deserve ENT evaluation. Correcting the underlying cause is far more effective than mewing. Alongside correction, yes, practising nasal breathing and tongue posture is beneficial.
Q: If mewing is mostly hype, why do orthodontists acknowledge any benefit?
Because the basic concepts (nasal breathing, tongue on palate, good posture) are legitimate. It’s the exaggerated claims and extreme practices that are problematic. Honest acknowledgment of what’s real and what’s not is the right approach.
Q: Should my child do myofunctional therapy?
If they have specific issues — tongue thrust, mouth breathing, open bite from habits — yes, myofunctional therapy has real benefits. As a general wellness practice for healthy children, it’s not typically indicated.
Q: Is there any age at which mewing could help?
Children in active growth phase (roughly 5–14) could potentially benefit from proper tongue posture as part of normal oral development. However, this benefit comes from proper orofacial myofunctional patterns — not specifically from “mewing” as marketed. If you want these benefits, work with a myofunctional therapist.
Q: What about “chewing gum for jawline”?
Chewing gum strengthens chewing muscles modestly but doesn’t significantly reshape bones. Can cause TMJ problems if excessive. Not recommended as a jaw-development strategy.
Q: Are there any legitimate jawline exercises?
Myofunctional exercises for tongue, lips, and swallowing are legitimate. Generic “jawline exercises” marketed online mostly don’t produce the promised results. Don’t spend money on online programs.
Q: My teen wants a sharper jawline. Is orthodontic surgery an option?
For young adults with significant skeletal issues, orthognathic surgery can make dramatic changes. This is major surgery with real risks. Only appropriate for clear clinical indications — not purely cosmetic preferences. Evaluation with an orthodontist and oral surgeon clarifies whether surgery is appropriate.
Q: Can I just have my teen do the basic principles without obsession?
Yes. Five core habits: (1) breathe through your nose, (2) keep lips gently closed when not talking, (3) rest your tongue on the roof of your mouth, (4) maintain good overall posture, (5) don’t pressure-swallow. These are free, healthy, and the actual beneficial elements.
The Bottom Line
Mewing is a social media phenomenon built on a kernel of real science wrapped in exaggerated marketing. The basic practices (nasal breathing, tongue-to-palate rest, proper swallowing) are genuinely good habits. The dramatic promises (reshaping adult faces, replacing orthodontic treatment, curing sleep apnoea) are not.
If your teen is interested in mewing:
- Support the healthy underlying habits
- Correct unrealistic expectations
- Watch for obsessive patterns
- Seek proper evaluation if they have real concerns
- Avoid spending money on mewing courses or devices
At myPediaclinic Dubai, I’m happy to discuss mewing honestly with teens and their parents. If your teen has genuine orthodontic or airway concerns, book a consultation for proper evaluation — not internet self-treatment.
Dr. Mohamed Hasab is a Specialist Orthodontist at myPediaclinic Dubai. He’s happy to discuss myofunctional concepts, growth modification, and evidence-based approaches to facial development with teens and their families.
