Mewing: The Controversial Technique Claimed to Sculpt Your Jawline

What is Mewing?

Mewing is a technique that involves positioning the tongue against the roof of the mouth with the goal of improving jawline definition and overall facial structure. This practice was popularized by Dr. Mike Mew, an orthodontist who believes that proper tongue posture can have significant effects on facial aesthetics.

Key takeaways

Practice mewing by pressing the entire tongue, including the back third, against the roof of the mouth with lips closed.
Adult bone structure is unlikely to change; visible improvements often result from soft tissue toning and better overall posture.
Avoid aggressive pressure or hard mewing to prevent jaw pain, TMJ dysfunction, headaches, and tooth grinding.
Effective tongue posture requires proper neck alignment, as forward head posture makes it mechanically difficult to maintain the tongue seal.
Consult a professional if you have nasal obstructions, as improper technique can exacerbate sleep-disordered breathing or jaw issues.

The Origins of Mewing

The concept of mewing is rooted in orthotropics, a branch of orthodontics that focuses on guiding facial growth through muscle function and posture. Dr. John Mew, the father of Dr. Mike Mew, developed these principles, which have since evolved into the technique known as mewing.

How to Practice Mewing

Keep your tongue pressed against the roof of your mouth, just behind your front teeth.
Ensure that your teeth are gently touching, but not clenched.
Close your lips, keeping your mouth relaxed.

Consistency is key to seeing results, and proponents of mewing suggest practicing this posture as often as possible throughout the day.

Benefits Claimed by Mewing Advocates

Supporters of mewing claim that it can lead to a variety of benefits, including:

Improved jawline definition
Better facial symmetry
Enhanced breathing by promoting proper tongue posture
Reduction in orthodontic issues

While these claims are compelling, it’s important to approach them with a critical eye, as scientific evidence supporting these benefits is limited.

Controversies and Criticisms

Despite its growing popularity on social media, mewing remains a controversial topic within the medical community. Critics argue that there is insufficient scientific evidence to support the claims made by mewing advocates. Furthermore, some experts caution that improper practice could lead to jaw pain or other issues.

It’s always advisable to consult with a healthcare professional before starting any new technique, especially one that involves changes to your physical posture.

The Biomechanics of the Hyoid Bone and Swallowing

To truly understand the mechanics of tongue posture, one must look beyond just the tip of the tongue and consider the hyoid bone, a U-shaped structure situated in the anterior neck. The tongue is not an isolated muscle; it is tethered to the hyoid, which acts as a mobile anchor point for the muscles involved in swallowing and breathing. When practicing proper tongue posture, the posterior third of the tongue—often called the “back third” or the “root”—must be elevated to the soft palate. This elevation creates a suction effect (often referred to as the “mewing seal”). Without engaging this posterior section, the hyoid bone remains in a lower position, which can hinder the development of the submental space (the area under the chin). Practitioners often overlook the role of the “mewing swallow,” a technique where the tongue is used to force the bolus of food or saliva against the palate, further training the muscles of the floor of the mouth to remain in an elevated, toned state rather than a sagging one.

The Role of Oral Myofunctional Therapy (OMT)

While mewing is often treated as a DIY social media trend, it shares significant DNA with Oral Myofunctional Therapy (OMT), a recognized clinical practice used to correct “tongue thrust” and other myofunctional disorders. OMT involves specific exercises designed to retrain the muscles of the lips, tongue, and cheeks. Unlike general mewing, OMT is usually performed under the guidance of a speech-language pathologist or a specialized dentist. The transition from active training to passive habituation is the most critical phase. Practitioners of OMT use tools like oral resistance bands or specific tongue-elevation exercises to ensure that the tongue has the strength to maintain the “mewing seal” without conscious, fatiguing effort. Without this foundational muscle strength, attempts at mewing often fail because the tongue simply lacks the endurance to stay elevated throughout the sleep cycle, where it is most prone to dropping.

Mewing and the Sleep-Disordered Breathing Connection

One of the most clinically relevant aspects of tongue posture is its impact on the airway during sleep. When the tongue falls backward into the pharyngeal space due to low resting posture, it can contribute to narrowing of the airway, which is a key physiological factor in Obstructive Sleep Apnea (OSA) and snoring. Proponents argue that by training the tongue to occupy the roof of the mouth, the airway remains more patent. However, this is a double-edged sword: for individuals with severe anatomical obstructions, forced tongue posture might exacerbate discomfort or cause secondary issues. It is essential to distinguish between “tongue posture for aesthetics” and “tongue posture for airway health.” If a person finds they cannot breathe through their nose while maintaining the tongue seal, they likely have a nasal obstruction (such as a deviated septum or enlarged turbinates) that must be addressed by an ENT before any posture techniques are attempted.

Anatomical Limitations: The Role of the Maxilla and Palate Width

A significant hurdle in the physical practice of mewing is the structural limitation of the adult skull. In children, the palatine suture is still malleable, allowing for potential widening of the dental arch. In adults, this suture is fused, meaning the “widening” of the palate through tongue pressure alone is highly debated and, by most orthodontic standards, considered impossible. Practitioners who claim to see structural changes in their 30s or 40s may actually be observing changes in soft tissue distribution—specifically, the reduction of fat deposits under the jaw and the hypertrophy of the masseter muscles—rather than actual bone remodeling. Understanding the difference between skeletal changes and soft-tissue adaptation is vital to setting realistic expectations. For many, the “results” of mewing are simply the result of better posture and fat loss, rather than permanent craniofacial reshaping.

The Risk of Temporomandibular Joint (TMJ) Dysfunction

The most common clinical concern regarding aggressive mewing is the potential for TMJ dysfunction. When individuals attempt to force their teeth into a specific alignment or hold the jaw in an unnatural position to “maximize” the mewing effect, they often introduce tension into the pterygoid muscles. If the jaw is held in a state of constant, slight engagement, it can lead to bruxism (grinding) or clicking of the joint. A healthy jaw position should be one of rest, not one of constant force. A common mistake is “hard mewing,” where individuals exert extreme upward pressure against the palate. This is strongly discouraged by most practitioners, as the force exerted by the tongue is meant to be a gentle, constant resting posture, not a weightlifting exercise for the maxilla. Any onset of headaches, earaches, or clicking sounds should be treated as an immediate signal to cease the practice and seek professional assessment.

Postural Chain: Connecting the Tongue to the Spine

The body functions as a kinetic chain, and the tongue is intrinsically linked to the cervical spine. If a person has a forward head posture (often referred to as “tech neck”), the muscles of the throat are elongated, making it mechanically more difficult to maintain the tongue on the roof of the mouth. You cannot effectively mew if your cervical posture is poor. To optimize the technique, one must first address thoracic mobility and neck alignment. By drawing the chin slightly backward—a movement known as a “chin tuck”—the airway opens, and the tongue naturally finds it easier to rest against the palate. This holistic approach suggests that mewing should not be viewed in isolation but as a component of a total-body postural correction program, where the tongue is the final piece of the puzzle, supported by a neutral spine.

FAQ

1. Is mewing scientifically proven?

Currently, there is limited scientific evidence to support the claims made by proponents of mewing. More research is needed to validate its effectiveness.

2. How long does it take to see results from mewing?

The time it takes to see results can vary greatly from person to person. Some may notice changes within a few months, while for others, it could take years.

3. Can mewing cause any harm?

If practiced incorrectly, mewing could potentially lead to jaw pain or other issues. It is crucial to follow correct techniques and consult a healthcare professional if you experience any discomfort.

4. Who should avoid mewing?

Individuals with jaw disorders or other dental issues should consult a healthcare professional before attempting mewing to avoid exacerbating any existing conditions.

5. Can children practice mewing?

Children can benefit from proper tongue posture, but any technique, including mewing, should be supervised by a healthcare professional to ensure it is done safely and effectively.