Overthinking, often linked to anxiety, stems from imbalances in neurotransmitters like low GABA (brain's natural brake), low serotonin, excess norepinephrine, and irregular dopamine levels, all affecting mood and stress response, while chronic stress itself depletes GABA, creating a cycle of racing thoughts and worry. Hormones like estrogen, progesterone, and thyroid issues can also play a role.
Chemicals believed to cause anxiety include serotonin, dopamine, norepinephrine, and gamma-aminobutyric acid (GABA).
Overthinking isn't a recognized mental disorder by itself. But research has found that it's often a symptom of other mental health conditions. For example, anxiety and depression can contribute to overthinking. And people who've experienced a trauma may be hypervigilant, or on high alert for danger at all times.
Cortisol, the primary stress hormone, increases sugar, also called glucose, in the bloodstream, enhances the brain's use of glucose and increases the availability of substances in the body that repair tissues. Cortisol also slows functions that would be nonessential or harmful in a fight-or-flight situation.
Some common indicators of chemical imbalances in the brain include:
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The telltale signs of channel mismatch can be sneaky, like a ninja with impressive dance moves but questionable rhythm. The most common symptom is a perceived "pull" toward one side during listening, as if your music is playing favorites with your ears.
Deficiencies in B vitamins, particularly B12, B6, and B9, have been linked to symptoms of depression and anxiety. These vitamins are vital in producing chemicals, like serotonin, that affect mood.
Hormonal imbalances show up as symptoms like fatigue, mood swings, weight changes, irregular periods, skin issues (acne), hair changes, sleep problems, brain fog, low libido, digestive issues, and temperature sensitivity, affecting energy, body functions, and mental well-being, often linked to stress, thyroid, or reproductive hormones.
Hormonal Factors
When estrogen and progesterone hormone levels drop during perimenopause, serotonin levels also fall, contributing to increased irritability, nervousness and anxiety. Higher levels of cortisol, the “stress hormone” that increases with age, can also create feelings of anxiety.
Overthinking is a trauma response that often begins during childhood if an individual experiences neglectful, invalidating or abusive events.
A type of therapy called cognitive behavioral therapy (CBT) is effective for overcoming overthinking and recognizing cognitive errors. “It helps one learn to first identify the errors, then to reframe the thinking in more logical and balanced ways,” says Duke.
Low serotonin affects the brain's ability to process options and assess risk. This can lead to constant overthinking or indecisiveness. Even choosing what to eat or wear becomes mentally draining. Over time, this makes people avoid decisions altogether, shrinking their engagement with life.
Lack of enough serotonin is thought to play a role in depression, anxiety, mania and other health conditions. Most of the serotonin found in your body is in your gut (intestines).
The good news is that you weren't born an overthinker. Overthinking is the result of one fact of human existence: we all have patterns to our behavior. These patterns, good and bad, develop over time based on life experiences. And just as patterns are learned, they can also be unlearned.
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Endocrinologists urge not to ignore symptoms like unexplained weight changes, persistent fatigue, excessive thirst/urination, heart palpitations, mood swings, skin/hair changes, menstrual irregularities, and nerve issues (tingling/numbness), as these often signal hormonal imbalances from conditions like diabetes, thyroid disorders, or pituitary problems, requiring early diagnosis and treatment to prevent serious complications. Pay attention to your body's patterns and seek help for symptoms that are sudden, persistent, or significantly impact daily life.
Adrenal glands make androgens, corticosteroids, and aldosterone. Overactive adrenal glands make too much of any of these hormones. Symptoms and treatment depend on which hormone is being overproduced. Symptoms may include high blood pressure, abnormal growth and sexual development, and obesity.
It has recently been discovered that taking high doses of vitamin B6 supplements significantly reduces feelings of stress, anxiety, and depression.
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Vitamin B12 deficiency is a commonly overlooked cause of psychiatric and even some neurological illnesses. Common neuropsychiatric illnesses associated with B12 deficiency are dementia, neuropathies, depression, and irritability. Authors concluded that OCD was an early manifestation of B12 deficiency.
Symptoms of a Chemical Imbalance in the Brain
Researchers hypothesized that a deficiency in certain neurotransmitters could lead to symptoms such as: Persistent feelings of sadness, hopelessness, or emotional emptiness. Overeating or loss of appetite. Insomnia or excessive sleep.
Gen Z likes wired headphones for a mix of nostalgia, anti-mainstream style (rejecting AirPods' "tech bro" vibe), and practical benefits like better sound quality, no charging, lower cost, and greater sustainability/longevity, tapping into retro aesthetics and a desire for simpler, more reliable tech, influenced by celebrities like Bella Hadid.
The "60/60 rule" for headphones is a hearing safety guideline: listen at no more than 60% of the maximum volume for no longer than 60 minutes at a time, then take a break to let your ears rest and recover, helping prevent noise-induced hearing loss. This simple habit protects hearing by managing sound intensity and duration, with noise-cancelling headphones helping by reducing the need to turn up the volume in noisy environments.