The toll that grinding takes
Research consistently links bruxism to stress. People who grind their teeth tend to report higher levels of life stress, anxiety, and depression than those who don’t. Personality studies point the same way: people who score high on neuroticism — a tendency toward worry and emotional instability — are more likely to grind, while emotionally stable people are less likely to.
Fight or flight
Here’s the likely mechanism: stress activates the body’s fight-or-flight response, releasing adrenaline and cortisol. This raises muscle tension, especially in the jaw, which can show up as clenching or grinding — particularly during sleep. Researchers have even reproduced grinding-like behaviour in rats by inducing emotional stress, adding biological weight to the connection. Many people notice they grind more after a stressful day, or even in anticipation of one — before a big presentation or exam, for instance.
That said, stress isn’t the only cause. Bruxism is generally multifactorial. Other contributors include sleep disorders (brief arousals during sleep are linked to grinding), misaligned teeth or jaw structure, conditions such as GERD or temporomandibular dysfunction (TMD), certain neurological or psychiatric conditions, genetic predisposition, and lifestyle factors like smoking, heavy drinking, and high caffeine intake — people who drink six or more cups of coffee a day are roughly twice as likely to grind. Some medications, including certain antidepressants, can trigger or worsen it too.
What happens when stress takes hold of your jaw
Under sustained stress, the body falls into protective muscular patterns — and the jaw, neck, and pelvis all respond. Over time, these patterns become habitual, then neurologically wired in, then structural. The night guard goes in at bedtime, but the nervous system never gets the message to stand down.
A solution most people don’t know about
Temporomandibular joint disorder (TMJ) is under diagnosed and under=treated, partly because its symptoms look so much like ordinary clenching or bruxism.
At the heart of Neural Organisation Technique (N.O.T.) — a specialized approach used by kinesiologists — is a principle many clients find surprising: the sphenoid bone at the base of the skull, the jaw, and the pelvis are neurologically and structurally connected, forming one integrated postural system.
A strain anywhere in that system affects the whole. A pelvis braced against chronic stress can drive jaw tension. A jaw clenched in fear or overload can show up in your posture, your sleep, and the way your whole body holds itself upright.
N.O.T. works with the neural pathways that shape posture, movement, and muscle tension — rather than treating the jaw joint in isolation. Part of the protocol involves precise intra-oral work, performed with surgical gloves, to help release deep-seated tension in the muscles that control the jaw. Because the technique relies on gentle neurological input rather than forceful manipulation, it works with the nervous system instead of triggering a fresh stress response.
Do you recognize yourself in this?
If you do, the question worth asking isn’t “how do I protect my teeth?” but “what is my nervous system still holding onto, and why?”
Stress today is structural, daily, and cumulative — and our resilience as a population is genuinely remarkable. But that resilience comes at a cost when the underlying stressors never get resolved.
The body finds somewhere to put what the mind can’t yet process. For many of us, that place is the jaw.
The good news: the nervous system isn’t fixed. It can respond, reset, and let go of patterns it has carried for years — but only when we work with it at the level where those patterns actually live.
End note
Stress is a significant, well-supported contributor to teeth grinding — particularly through muscle tension and its link to anxiety. However, it usually works alongside other factors rather than acting alone. If grinding is a regular issue for you, you need to seek professional help.
About the author
Liezel Olivier, is a South African Specialized Kinesiologist and ASKSA member whose path into trauma mechanics began after a personal health crisis following the birth of fraternal twins.
Her research into stress and the central nervous system led her to Neural Organization Technique (N.O.T.). This is a receptor-based protocol developed by New York chiropractor Dr Carl A. Ferreri.
Using N.O.T., Liezel works across two pathways — structural and biochemical — to intercept stress stored within the nervous system.
Helping clients move out of survival states and into restored physiological function.
