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The Connection Between Hormones and Mood

By Tazkia Zainab
Posted: May 6, 2026

Introduction

Have you ever noticed feeling unusually irritable at certain times of the month, only to realize it happens just a few weeks before your period begins? Have you also experienced sudden mood swings that seem to come out of nowhere? If yes, these changes may not just be in your head. They could be result of your hormones at work. Hormones are the chemical messengers secreted by our body’s endocrine glands. They perform several bodily functions and processes, including growth and development, metabolism, sexual function, reproduction and mood. Our mental health is strongly impacted by hormones because hormones play a major role in regulation of mood and emotions. 

How do the hormones influence mood?

We usually consider brain and body as the separate systems, the brain in charge of thinking and feeling, and the body handling everything physical. But when it comes to hormones and mood, this separation doesn’t exist. The two systems are in constant, real-time conversation, and hormones are the messengers that carry the dialogue. Hormone, once released into the bloodstream, travel to target organs and tissues, including brain, where they bind to specific receptors and evoke a response. For instance, estrogen, a steroid hormone influences a wide array of brain functions. Its receptors are primarily present at distinct region of the brain associated with mood, cognition, and memory such as hippocampus and prefrontal cortex. This means that any fluctuations in the hormone levels do not just affect your reproductive system or your metabolism, but they literally determine how you feel, how you think and how you respond to the world around you. The primary pathway by which the hormones influence mood are as a result of their interaction with neurotransmitters. The common neurotransmitters (chemical messengers of brain) are serotonin, gamma-aminobutyric acid (GABA), dopamine, and norepinephrine that carry signals between nerve cells. This hormone-brain connection is mediated by a key structure called as hypothalamic-pituitary-adrenal (HPA) axis. It is a complex set of direct influences and feedback interactions among three components (hypothalamus, and pituitary gland in brain, and adrenals above the kidneys). The interrelationship between endogenous hormones and neurotransmitters is critical to understanding the neurobiological underpinnings of mood, cognition, and behavior.

Key hormones that influence mood

Hormones are secreted by several endocrine glands found throughout the body. These include:

  • Pituitary gland

  • Thymus

  • Pineal gland

  • Thyroid gland

  • Pancreas

  • Adrenal glands

  • Ovaries

  • Testes

Almost all of hormones affect your mood, emotions, and mental health in one way or another. There are some key hormones which have the most impact on your mental health.

Serotonin: It is a neurotransmitter with an integral physiological role in the human body. it regulates various activities, including behavior, mood, memory and gastrointestinal homeostasis. Fluctuations in serotonin levels are believed to contribute to conditions such as depression, anxiety disorders, post-traumatic stress disorder, and obsessive- compulsive disorder.

Dopamine: A neurotransmitter which binds to the different types of dopamine receptors namely D1, D2, D3, D4, D5 and depending upon the type of receptor it has many functions. It is linked to feelings of motivation and reward in the brain. Low dopamine levels can cause anxiety, low energy, trouble sleeping, mood swings, hallucinations, tremors to name a few. On the other hand, high dopamine levels are associated with aggression, impulsiveness and euphoria. 

Cortisol: It is the body’s primary stress hormone which plays a crucial role in regulating mood, energy and emotional stability. High or low levels are capable of affecting mental health.

Thyroid hormone: Fluctuations in the levels of thyroid hormone can also cause symptoms of depressions and anxiety.

Sex hormones: The main sex hormones for women are estrogen and progesterone. Their fluctuations throughout menstrual cycle, during pregnancy and at menopause greatly affect mood, emotions, and sexuality. Testosterone, the main male hormone also affects behavior, mood, and sexual behavior. 

How Hormones Shape Mood Across the Lifespan

Puberty: It is a key stage of transition from childhood to adulthood. It involves physical, psychological, and emotional changes. Main hormones that are involved in puberty in males and females are testosterone and estrogen respectively which play crucial role in sexual development. These hormonal changes do not only affect body; they have a significant effect on mood and behavior. Adolescents may experience mood swings, increased emotional sensitivity, and irritability.

Premenstrual syndrome (PMS) and premenstrual dysphoric disorder (PMDD): PMDD is a severe form of premenstrual syndrome which results from an abnormal sensitivity to normal hormonal fluctuations during menstrual cycle, particularly estrogen and progesterone. It leads to significant mood swings and emotional upheaval.

Postpartum depression: It is a serious, but treatable mood disorder that occurs after childbirth. It happens due to rapidly changing hormonal levels after childbirth including drops in estrogen and progesterone.

Perimenopause and menopause: Due to the significant drops in estrogen and progesterone levels, women may have severe mood swings, irritability, depression, anxiety and hot flushes.

Management and treatment of hormone-related mood changes:

Lifestyle changes:

Physical activity naturally boosts the serotonin, dopamine, endorphin levels which are helpful in stabilizing mood. Maintaining sleep hygiene, taking balanced diet and seeking professional help when needed can help manage the symptoms.

Medications:

Hormone replacement therapy (HRT) is a helpful way to address the mood changes that occur during menopause and perimenopause. Birth control pills, antidepressants and anti-anxiety medications can help address symptoms of PMS. Post-partum depression can also be managed by antidepressants.

Psychological therapies:

Cognitive behavioral therapy: It helps reframe emotional responses during hormonal fluctuations.

Psychotherapy: It is especially useful for postpartum depression and PMDD. 

Conclusion:

Hormones are far more than just biological regulators, they determine how we feel, think, and respond to world around us. Understanding this connection helps us move away from self-blame toward self-awareness. With right support, healthy lifestyle and timely intervention, hormone related mood changes can be managed effectively. 

References:

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