Bone structure
Mewing (Tongue Posture)
Plausible for children during growth; no controlled evidence for adult skeletal change.
Also called: mewing · tongue posture · hard mewing · orthotropics
Verdict — mixed
Real in part — the claim outruns what it actually does.
Evidence grade C
Mechanistic plausibility, small studies, or observational data. Suggestive, not established.
Mechanism
Proposes that sustained palatal tongue pressure guides maxillary growth trajectory — a mechanism only active while craniofacial sutures remain unfused.
Citations
- Orofacial myofunctional therapy and orthodontic outcomes: a scoping reviewInternational Journal of Orofacial Myology · 2021
The full read
Orthotropics-adjacent claims have some grounding in pediatric orofacial myology: tongue posture and mouth breathing genuinely influence facial development in growing children. In adults, sutures are fused; no controlled study demonstrates measurable skeletal remodeling from tongue posture. What adults CAN get: subtly improved submental (under-chin) appearance from better resting tongue and head posture — a soft-tissue effect, not bone. Harmless, occasionally useful, wildly oversold.