The tension you carry in your jaw

JAW TENSION

6 min read

You noticed you were clenching during a meeting. Not angry, not stressed beyond the usual. The jaw was shut tight and you had no idea when it started. The temporomandibular joint, the hinge that opens and closes your mouth, has estrogen receptors in its cartilage and surrounding tissues. Women are twice as likely as men to develop pain and dysfunction in this joint.

The clenching is not a stress response you should be managing better. The joint itself is under changing conditions, and what you feel in your jaw has a component you were never told about.

Estrogen receptors have been identified in the condyle cartilage and retrodiscal tissues of the temporomandibular joint. Research suggests that estrogen inhibits inflammatory processes associated with temporomandibular disorder pain. When estrogen levels are low, whether premenstrually or postmenopausally, TMD pain tends to increase.

A 2022 study published in the journal Menopause found that TMD symptoms are linked with menopause symptoms and become more prominent during the menopause transition than in the years after it. The timing matters: the period of greatest hormonal fluctuation, not the lowest estrogen state, is when the jaw is most affected.

Bruxism, the repetitive clenching and grinding of the teeth, has a global prevalence of roughly 22 percent. It occurs during sleep and during waking hours. A 2024 systematic review found that age is a significant factor for sleep bruxism in women, and the condition involves rhythmic masticatory muscle activity that loads the jaw joint repeatedly through the night.

WHAT IT DOES NOT ESTABLISH

Whether the jaw tension in any individual is primarily hormonal, stress-related, or mechanical. Bruxism has a multifactorial origin involving central nervous system mechanisms, stress, sleep arousal, and genetic predisposition. Dental occlusion was once considered a primary cause but has been largely refuted by subsequent research.

ESTROGEN RECEPTORS IN THE TMJ

Estrogen receptors are present in the cartilage, disc, and retrodiscal tissues of the temporomandibular joint. Estrogen modulates the inflammatory response in these structures. When levels decline, the anti-inflammatory input diminishes and the joint becomes more susceptible to pain, stiffness, and degeneration.

THE NUMBERS

12 million

Americans estimated to have had temporomandibular joint pain (4.8 percent of adults). Up to 15 percent have had at least one symptom. Women are affected at twice the rate. National Institute of Dental and Craniofacial Research.

22%

Global prevalence of bruxism (sleep and awake combined). Sleep bruxism alone is 21 percent. Age is a significant factor for sleep bruxism in women. Journal of Clinical Medicine, 2024.

Twelve million people with jaw pain. Roughly one in five adults clenching or grinding. The two-to-one sex ratio, combined with the menopause transition finding, suggests this is more than a stress problem wearing a dental label.

THE INTERVENTION WITH THE STRONGEST EVIDENCE

Self-management with jaw exercises

UMBRELLA REVIEW, 2026

A 2026 umbrella review published in the Journal of Oral Rehabilitation synthesized evidence from multiple systematic reviews and found that jaw exercises as part of self-management interventions are effective for pain relief and improved jaw mobility. The review also found that counseling on relaxation techniques, thermal therapy, and self-massage formed part of effective self-management programs.

“Management should be patient-centered, conservative, reversible and evidence-based, focusing on decreasing pain and reestablishing function.”

AMERICAN ASSOCIATION FOR DENTAL, ORAL, AND CRANIOFACIAL RESEARCH, 2026

WHAT IT IS NOT

Self-management does not replace clinical evaluation if jaw pain is persistent, the joint locks, or function is impaired. It is the recommended conservative first step. Irreversible treatments such as occlusal adjustment or surgery are no longer considered first-line for most temporomandibular disorders.

WHEN TO CALL

Jaw pain accompanied by headache, scalp tenderness, or vision changes, particularly if you are over 50. Cramping pain in the jaw on chewing can be a sign of giant cell arteritis, which requires urgent evaluation.

The jaw locks in an open or closed position and you cannot unlock it. This may indicate disc displacement and needs clinical assessment from a dentist or oral specialist.

New asymmetry in jaw movement, numbness in the lower face, or unexplained tooth loosening. These are red flags that warrant evaluation to rule out causes beyond temporomandibular disorder.

THIS WEEK

Right now, check: are your teeth touching? If they are, part them slightly. Lips together, teeth apart, tongue resting on the roof of your mouth behind the upper front teeth. This is the resting position of the jaw. Most people who clench are unaware they are doing it.

Set three reminders tomorrow to check the jaw position. The first intervention for clenching is catching it. Awareness of the habit during the day is the foundation of every self-management program the review identified.

If jaw pain, clicking, or locking has been present for more than a few weeks, mention it to your dentist at your next visit. Conservative evaluation is the recommended first step, and your dentist can determine whether a referral is needed.

The resting position is the simplest intervention in this entire newsletter. Lips together, teeth apart, tongue up. You can check it anywhere, in any conversation, without anyone knowing. The jaw that clenches without instruction can also learn to release without instruction. Checking is the first step.

ONE TAP, NO FORM

Where do you carry the tension?

Tapping opens a pre-written reply. Nothing is public, nothing goes to a list. What most readers tap decides what gets explained next.

My jaw is clenched when I wake up

I catch myself clenching during the day

My jaw clicks or pops when I open wide

I did not realize I was clenching until just now

Or write in your own words. Every reply is read.

Read recent issues

EVERY SOURCE READ FOR THIS ISSUE

Six sources: one menopause-TMD study, one estrogen-TMD review, one bruxism prevalence meta-analysis, one self-management umbrella review, one professional body statement, and one red flags guideline.

1	Does temporomandibular disorder correlate with menopausal symptoms? Study, Menopause (The Menopause Society journal), 2022

2	Estrogen and temporomandibular disorders Review, Dimensions of Dental Hygiene, 2020

3	Global prevalence of sleep bruxism and awake bruxism: a systematic review and meta-analysis Meta-analysis, Journal of Clinical Medicine, 2024

4	Self-management therapies for temporomandibular disorders: evidence from systematic reviews Umbrella review, Bijelic et al., Journal of Oral Rehabilitation, 2026

5	Temporomandibular disorders (TMD) Policy statement, American Association for Dental, Oral, and Craniofacial Research, 2026

6	Management of painful temporomandibular disorder in adults Clinical guideline, Royal College of Surgeons of England

Read more from The Cortisol Effect