Among the most common forms of food nowadays, the following stand out:
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Fast food: very popular among young people, it is high in fat and calories, but low in essential nutrients. Excessive consumption can harm overall health and hormonal balance.
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Vegetarianism and veganism: more and more young people are opting for these lifestyles, which can be healthy as long as they are well planned to ensure protein, iron and vitamin B12.
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Diet high in sugar: Excessive consumption of sugar (sweets, soft drinks, cookies) can increase cortisol levels, the well-known “stress hormone” produced by the adrenal glands.

Cortisol, stress and the nervous system
Cortisol regulates metabolism, stress response and the immune system. However, when it is constantly elevated, it keeps the body in a state of permanent alertness that affects the functioning of the nervous system – the complex set of neurons and structures responsible for control and communication within the body.
This state of alertness can generate problems during sleep, such as nocturnal bruxism: the involuntary habit of clenching or grinding the teeth while sleeping. Bruxism can also occur during the day, although it is more common at night.
Consequences of nocturnal bruxism
Bruxism may go unnoticed until there is visible damage or discomfort, and is related to other sleep disorders such as snoring or apnea.
The most frequent symptoms include:
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Worn, chipped, loose or fractured teeth.
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Tooth pain or sensitivity.
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Tension, fatigue or blockage in the muscles and joints of the jaw.
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Clicking or popping noises when moving the jaw.
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Pain in jaw, neck, face and sensation of pain similar to ear pain.
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Headaches in the temples.
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Sleeping problems, which also affect the partner.
How the modern diet influences all this
High intakes of sugar and processed foods can increase cortisol and alter the nervous system, increasing the likelihood of bruxism and affecting sleep quality and dental health.
Now that you know the link between diet, cortisol and nighttime bruxism, you can make better decisions to take care of your physical and emotional health. Changing eating habits and managing stress are key to protecting your teeth and your overall well-being.