The Role of Diet in Daytime Teeth Grinding: Foods to Avoid and Embrace

The Role of Diet in Daytime Teeth Grinding: Foods to Avoid and Embrace

Daytime teeth grinding, medically referred to as bruxism, is a condition characterized by the involuntary clenching or grinding of teeth. While many factors can contribute to this, including stress and anxiety, one often overlooked factor is diet. Your food choices can significantly impact the health of your teeth and the propensity to grind them.

Here, we discuss the foods you should avoid and the ones you should embrace to help mitigate daytime teeth grinding:

The connection between diet and bruxism

The food we eat can influence various bodily functions, including nerve and muscle activities, which can subsequently impact teeth grinding. Consuming certain foods can increase energy, anxiety, or sleep disturbances, all of which can be triggers for bruxism.

While bruxism is multifaceted in origin, diet plays a pivotal role. Dietary choices influence biochemical processes, hormone production, and neurotransmitter activity. Any imbalances can set off a chain of events that impact the neuromuscular activity of the jaw.

Detailed breakdown of dietary concerns

Amino acids

Tryptophan, an essential amino acid, is a precursor to serotonin, which can influence mood and stress response. Foods high in tryptophan, like turkey, eggs, and dairy, might aid in reducing stress-induced bruxism.

Histamine-rich foods

Some people have histamine intolerance, where they react to foods high in histamine, like aged cheeses, fermented foods, and certain vegetables. This can lead to migraines, a potential trigger for teeth grinding.

Alcohol metabolism

It's not just alcohol consumption but how one metabolizes alcohol. Some people experience sleep disruption due to the by-products of alcohol metabolism.

Foods to avoid

a red apple

Caffeine-rich foods and drinks

This includes coffee, tea, certain sodas, and even chocolate. Caffeine is a stimulant that can lead to increased alertness and anxiety, making it easier for the muscles in your jaw to clench or grind.


Alcohol can disrupt the normal sleep cycle, and while it may make you feel drowsy, it can lead to poor-quality sleep. This disruption can result in increased instances of teeth grinding during the day.

Sugary foods and drinks

Consuming excessive sugar can lead to an energy spike, followed by a crash. This can cause fluctuations in mood and energy levels, which can exacerbate grinding.

Processed foods

These often contain a high amount of added sugars, preservatives, and other chemicals that can disrupt the body's natural rhythm, potentially leading to teeth grinding.

Acidic foods & beverages

These can erode tooth enamel, making teeth more susceptible to the effects of grinding. Citrus fruits, tomatoes, and certain carbonated beverages can have high acidic content.

High-sodium foods

Excessive salt can lead to dehydration. Dehydration can alter the balance of electrolytes responsible for muscle function, possibly contributing to muscular tension and bruxism.

a poached egg

Artificial sweeteners

Aspartame, a common artificial sweetener found in many diet sodas and sugar-free products, has been linked to headaches and migraines. This increased tension can potentially lead to increased teeth grinding.

Foods to embrace

Magnesium-rich foods

Magnesium is a natural muscle relaxant. Foods like spinach, bananas, and almonds are rich in magnesium and can help relax the jaw muscles, reducing the tendency to grind.

Calcium-rich foods

Dairy products like milk, cheese, and yogurt or fortified plant-based alternatives can help strengthen teeth and bones, providing resistance against the damage caused by grinding.

Vitamin C

This vitamin is essential for the production of dopamine, a neurotransmitter that plays a role in mood and response to stress. Foods rich in vitamin C, such as oranges, strawberries, and bell peppers, can potentially help reduce stress-related grinding.

Complex carbohydrates

Whole grains like oatmeal, brown rice, and quinoa can provide sustained energy release, preventing the energy highs and lows that might contribute to bruxism.

Herbal teas

Go for non-caffeinated varieties like chamomile or valerian root tea. These can have calming effects on the body and be consumed before bedtime to improve sleep quality.

Omega-3 fatty acids

Found in fish like salmon, walnuts, and flaxseeds, Omega-3s have anti-inflammatory properties. They can help reduce muscle inflammation and tension, potentially lessening grinding.


Vitamin B complex

B vitamins, especially B5 (pantothenic acid), play a role in stress management and neurotransmitter formation. Incorporate foods like legumes, eggs, and avocados to ensure an adequate intake.


Oxidative stress might contribute to muscle tension and grinding. Foods rich in antioxidants, such as blueberries, beans, and artichokes, can help combat this.

Dietary synergy for oral health


Gut health might influence bruxism. A balanced gut biome can lead to improved mood and reduced stress. Consider foods like yogurt, kefir, and other fermented items.


These are compounds in plants that can have health benefits. For instance, polyphenols in green tea might help combat stress and inflammation.


Essential for joint health, collagen might assist in maintaining the temporomandibular joint (TMJ), reducing discomfort and tension. Bone broth and collagen supplements are sources to consider.

Holistic Considerations

Meal timing

Eating large meals or consuming caffeine close to bedtime can disturb sleep patterns. Disturbed sleep can lead to an increase in nighttime and daytime grinding. Aim to finish any substantial meals at least three hours before bedtime.


Filename: grapefruit

Alt-text: grapefruit

Dietary supplements

If you can't get certain nutrients from your diet, consider supplements. Magnesium, calcium, and B vitamins can be taken as supplements after consultation with a healthcare professional.

Stay balanced

Extreme dieting or skipping meals can lead to blood sugar fluctuations. Low blood sugar can lead to headaches, stress, and tension, contributing to bruxism. Maintain a balanced diet with regular meal timings.

Hydration matters

It's not just about drinking water but also about balancing electrolytes. Consider beverages that offer a balance of potassium, sodium, and magnesium, especially after intense physical activity.

Additional tips

While diet plays a significant role, it's essential to consider other factors that might contribute to teeth grinding:

Stay hydrated

Drinking water throughout the day can help maintain muscle function and oral health.

Limit stress

Stress is a major trigger for many. Consider incorporating relaxation techniques like meditation, deep breathing exercises, or even physical activity to manage stress levels.

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Your diet is integral to many facets of your health, including the propensity for daytime teeth grinding. By being mindful of the foods and drinks you consume, you can take a proactive step in reducing the risk of bruxism and preserving the health of your teeth. Embrace a balanced, nutrient-rich diet, and your teeth will thank you!

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