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Brain Upgrade|Neurotechnology| Medical Dictionary|How 1 to 10

Hormone balances may affect anxiety as well. Many different hormones have an effect on brain chemistry and neurotransmitter production and balance, so if these hormones appear to be out of balance, anxiety may be the result.

Some examples of hormones affecting the brain include:


Adrenaline is one of the most common causes of anxiety symptoms. Your body releases it when your fight or flight system is active, and it causes the increase in heart rate, muscle tension, and more. In some cases, long term stress and anxiety may damage your ability to control adrenaline, leading to further anxiety symptoms.

Thyroid Hormone

Thyroid hormone appears to regulate the amount of serotonin, norepinephrine, and Gamma-aminobutyric acid (GABA) produced and distributed to the brain, so problems with your thyroid may also increase your risk for developing anxiety.

Several hormones may cause anxiety, and a change in brain chemistry may increase the production of hormones that lead to further anxiety symptoms.

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