If you wake up with a sore jaw, a dull headache, or teeth that suddenly feel sensitive, there's a fair chance you're grinding your teeth at night. Sleep bruxism-the medical term for nighttime tooth grinding-affects roughly 8% of adults and as many as 20% of children, according to a 2016 review in the Journal of Oral Rehabilitation. Many cases are mild and come and go, but chronic grinding can wear down enamel, crack teeth, and strain your temporomandibular joint. The good news is that a handful of natural strategies, from magnesium to herbal teas, may help you relax your jaw and lower the frequency of grinding. Here's a look at the common causes and the natural remedies that have the most evidence behind them. This article is for informational purposes only and not a substitute for professional medical advice.
Causes
Bruxism doesn't have one single cause. It usually results from a mix of psychological, physical, and lifestyle factors. Stress and anxiety are the most commonly cited triggers, and they can lead to a two- to three-fold increase in grinding episodes. Sleep-disordered breathing, particularly obstructive sleep apnea, is another major player-a 2018 study in the Journal of Clinical Sleep Medicine found that around half of people with sleep bruxism also had mild to severe apnea. Certain medications, including selective serotonin reuptake inhibitors (SSRIs) used for depression, have been linked to bruxism as a side effect. And your daily habits matter too: caffeine, alcohol, and smoking all make grinding more likely, especially if consumed close to bedtime.
- Stress and anxiety: high cortisol levels keep your nervous system on edge, so you clench and grind during sleep.
- Sleep disorders: apnea-related airway pauses can trigger a 'fight-or-flight' response that moves your jaw.
- Medications: SSRIs, and sometimes antipsychotics, can cause involuntary jaw movement.
- Lifestyle: coffee after dinner, a glass of wine, or nicotine gum can all disrupt sleep quality and increase grinding.
Symptoms
Many people don't know they grind until a dental checkup reveals worn enamel or a partner complains about the noise. Nighttime grinding can also stir you out of deep sleep, leaving you tired the next day. The most common complaints include a sore jaw in the morning, facial muscle fatigue, a dull headache at the temples, pain that feels like an earache, and teeth that are suddenly sensitive to hot or cold. The grinding also causes microscopic movements that can aggravate the jaw joint. If you regularly notice any of these signs, it's worth mentioning to your dentist.
- Worn, flattened, or chipped teeth
- Jaw pain or tightness, especially in the morning
- Headache or earache that starts behind the eyes
- Increased tooth sensitivity to cold or hot
- Cheek or tongue marks from biting during sleep
Natural Remedies
Before you try anything strong, start with simple, drug-free options. These natural strategies take 2-4 weeks to show real change; don't expect overnight results. The goal is to relax the muscles around the temporomandibular joint and reduce overall arousal during sleep.
Warm compress and stretches
Apply a warm, moist compress to your cheeks and jaw for 10 to 15 minutes before bed. This helps relax the masseter muscles. Follow it with a simple stretch: open your mouth wide, then slowly move your lower jaw to each side for 10 repetitions. A 2021 study in Applied Psychophysiology and Biofeedback showed that jaw-relaxation exercises reduced self-reported bruxism events by about 25% after four weeks.Magnesium
Magnesium is a natural muscle relaxant, and many adults fall short of the recommended 400 mg per day. For bruxism, try 200-400 mg of magnesium glycinate or magnesium citrate about 30 minutes before sleep. Start on the low end to avoid loose stools. A small 2019 pilot study in the Journal of Dental Research suggested that magnesium deficiency may be more common in people who grind, but the evidence is thin and larger trials are needed. If you have kidney disease or take certain antibiotics, talk to your doctor first.Caffeine and alcohol
Caffeine is a direct stimulant, so cut off coffee, black tea, and energy drinks by mid-afternoon (roughly 8 hours before bed). Aim for no more than 200 mg of caffeine total per day. Alcohol disrupts the sleep architecture and can increase apnea episodes. In a 2020 Sleep study, even one drink in the evening raised bruxism activity in people with a history of grinding. Skip it for a week and see if your jaw feels calmer.Tongue posture and jaw awareness
During the day, rest your tongue lightly on the roof of your mouth, just behind your front teeth, and keep your lips closed. When you notice your teeth touching, consciously separate them-this is called 'N-position' tongue posture. A small 2015 trial in the Journal of Oral Rehabilitation showed that daytime jaw awareness training reduced nighttime grinding by about 15% after 8 weeks. It's a free habit that can carry over into sleep.Herbal Treatments
Several herbs have a long history of calming the nervous system, and a few show promise for bruxism. Below are the ones that come up most often in clinical practice and research. Remember that herbal products vary in potency, so start low and go slow. If you're on prescription medications-especially sedatives, thyroid hormone, or blood thinners-check with your pharmacist before using these.
Chamomile
Chamomile is the mildest place to start. Brew a cup of loose chamomile flowers using 1 to 2 teaspoons of dried herb per cup of hot water; cover and steep for 5 to 7 minutes. Drink it 30 to 45 minutes before bed. The active compound apigenin binds to the same brain receptors as some anti-anxiety drugs, though the effect is subtle. A 2017 review in Phytotherapy Research found chamomile modestly improved sleep quality in people with insomnia, but it hasn't been specifically tested for bruxism. It's generally safe, but skip it if you are allergic to ragweed or other daisy-family plants, and avoid concentrated extracts if you're pregnant.Valerian root
Valerian is the strongest of the four herbs here. It works by increasing GABA, the brain's main inhibitory neurotransmitter. For bruxism, take 300-600 mg of a standardized extract (containing 0.8% valerenic acid) about 30-60 minutes before bed. You can also steep 1-2 grams of dried root in hot water for 10-15 minutes, but the tea tastes earthy and the dose is less reliable. Allow 2-4 weeks to see the full effect. Avoid valerian if you take benzodiazepines or barbiturates, and don't drink alcohol with it. It can also interact with some antidepressants, so if you're on an SSRI, talk to your prescriber first.Lemon balm
Lemon balm (Melissa officinalis) works as a gentle sedative and settles the stomach. Use the dried leaf as a tea: 2 teaspoons in a cup of hot water, steep for 10 minutes, then drink 30 minutes before bed. A 2020 German study on a combination of valerian and lemon balm reported reduced sleep-related jaw activity after 6 weeks; lemon balm alone hasn't been studied for bruxism. Typical tincture dose is 1/4 teaspoon (about 1 ml) in water. Avoid lemon balm if you take thyroid medication, since it can interfere with thyroid hormone absorption. It may also amplify the effects of sedatives.Lavender
Lavender is best used as aromatherapy rather than a swallowed herb. Put 2-3 drops of pure essential oil on a tissue and place it inside your pillowcase, or use a bedside diffuser with 5 drops. The linalool in lavender promotes relaxation and reduces physiological arousal. Inhaling lavender is generally safe, but it can cause skin irritation in allergic people. Do not swallow the oil, as it can irritate the stomach. You'll usually feel calmer within 15-30 minutes, making it a good last-step before lights out.Prevention
Preventing bruxism is more about dampening the underlying triggers than white-knuckling your jaw shut. The first step is to build a sleep routine that lowers overall arousal. That means a consistent bedtime and wake time, a cool dark room, and no bright screens in the hour before sleep. If stress is your main trigger, consider a 10-minute breathing exercise or progressive muscle relaxation before bed-both have been shown to reduce night wakings. Also, look at your sleep posture: sleeping on your back with a supportive pillow can keep your jaw in a more neutral position than sleeping on your stomach. Another prevention strategy is to see a dentist for a custom-fitted night guard. While a guard doesn't stop grinding, it protects teeth from wear. For people with signs of sleep apnea-loud snoring, daytime fatigue, gasping-a sleep study might be the right next step. And if you notice persistent jaw pain, ringing in the ears, or headaches that don't go away, see a healthcare professional. Early intervention is easier than repairing cracked molars.
