The Hidden Costs of Chronic Stress: Understanding the Impact on Your Body and Health
Nearly 75% of adults report experiencing physical symptoms from stress — a reminder that chronic stress is not just psychological, it is deeply biological.”
Stress is a normal part of life. In small amounts, it can help us stay focused and respond to challenges. However, when stress becomes chronic, persisting for weeks or months, it can begin to negatively affect both physical and mental health.
For many patients who are juggling careers, family, and personal goals, chronic stress may present as persistent fatigue, difficulty concentrating, low mood, or weight changes. These symptoms that often resemble other health concerns, making it easy to overlook stress as a contributing factor. Recognizing stress as a potential driver is an important first step towards restoring balance and supporting overall well-being.
What Is Chronic Stress?
Chronic stress occurs when the body’s stress response is repeatedly activated or remains active for prolonged periods of time. When the body perceives stress, the hypothalamus signals the pituitary gland to stimulate the adrenal glands to release cortisol and adrenaline[1].
This response is designed to help the body react quickly to challenges. In short bursts, it’s protective, but prolonged activation of the hypothalamic–pituitary–adrenal (HPA) axis can place strain on multiple body systems, potentially contributing to a range of symptoms over time[2].
Effects of Chronic Stress on the Body
Chronic stress can affect several key body systems, particularly hormones, sleep, digestion, and immune function.
Thyroid Function
Elevated cortisol may influence thyroid hormone regulation by:
- Suppressing thyroid-stimulating hormone (TSH) signalling[3]
- Reducing conversion of T4 (inactive thyroid hormone) to T3 (active thyroid hormone)[4]
Potential symptoms include[5]:
- Fatigue
- Difficulty losing weight or unexplained weight changes
- Brain fog or difficulty concentrating
- Dry skin and hair thinning
- Slower metabolism
- Constipation
- Mood changes such as anxiety, irritability, or low mood
Reproductive Hormones
Chronic stress can affect the hypothalamic-pituitary-gonadal (HPG) axis, which regulates reproductive hormones such as estrogen, progesterone, and testosterone[6].
The hypothalamus releases GnRH (gonadotropin-releasing hormone) which signals to the anterior pituitary gland to release LH (luteinizing hormone) and FSH (Follicle stimulating hormone) which signal to either the testes or ovaries to release estrogen, progesterone, and testosterone.
Elevated cortisol can suppress GnRH release from the hypothalamus and reduce the pituitary gland’s sensitivity to GnRH. This may lower LH and FSH secretion and affect ovarian or testicular hormone production[7].
In women, this may affect ovulation and progesterone production. Symptoms may include[8]:
- Irregular menstrual cycles
- Missed periods
- Worsened PMS symptoms
- Reduced fertility
- Low libido
In men, this may affect testosterone and sperm production. Symptoms may include[9]:
- Low libido
- Erectile dysfunction
- Fatigue
- Mood changes such as irritability, anxiety, or low mood
- Reduced muscle mass and fertility
Sleep
Sleep is critical for supporting the stress response. Chronic stress can disrupt the body’s natural cortisol rhythm, which normally peaks in the morning and declines in the evening to prepare for sleep. This disruption can produce variable patterns in cortisol release and potential symptoms may include[10]:
- Difficulty falling asleep
- Frequent nighttime awakenings
- Light or restless sleep
- Waking up feeling unrefreshed
- Daytime fatigue
Stress and sleep share a bidirectional relationship: poor sleep can increase stress reactivity, while stress can disrupt sleep quality, creating a self-reinforcing cycle. Supporting sleep through consistent bedtime routines, limiting evening stressors, and practicing relaxation techniques can help break this cycle and improve resilience.
Digestion
Stress activates the “fight-or-flight” response. During this state, the nervous system prioritizes functions needed for immediate survival, diverting blood flow and energy away from digestion[11]. Over time, this may contribute to:
· Bloating
· Indigestion or acid reflux
· Changes in bowel habits (constipation or diarrhea)
· Abdominal discomfort
Stress can also influence communication between the brain and the enteric nervous system, often referred to as the gut–brain axis. This disruption may affect the protective gut barrier, increase intestinal inflammation, and alter the microbiome by reducing beneficial bacteria and promoting the growth of harmful bacteria. Supporting digestion through mindful eating, stress reduction, and targeted nutrition can help maintain gut health.
Immune Function
When the body detects injury, infection, or inflammation, immune cells release signaling molecules called cytokines that trigger an inflammatory response. Cortisol helps regulate immune activity and inflammation by limiting excessive production of pro-inflammatory cytokines and preventing overactivation of immune cells[12].
With prolonged stress, this regulatory system may become less effective, as immune cells because less responsive to cortisol’s signals potentially leading to[13]:
- Increased susceptibility to infections
- Slower recovery from illness
- Persistent low-grade inflammation
- Ongoing fatigue
Lab Testing to Consider
To better understand how stress may be affecting your body, the following labs may be considered:
- Cortisol
- Fasting glucose and insulin
- HbA1C
- Thyroid Panel (TSH, free T4, free T3, reverse T3)
- FSH, LH, estradiol, progesterone, free and total testosterone
- Vitamin B12 and D
- Ferritin
- Complete blood count (CBC) with differential
Naturopathic Approaches to Managing Chronic Stress
Managing chronic stress often requires a multifaceted approach that supports both physical and mental health.
- Diet and lifestyle strategies tailored to support hormone balance and energy
- Oral supplements or vitamins as indicated by lab results
- Herbal support to help the body respond to stress
- Adjunctive therapies such as IV therapy
Treatments are individualized based on lab results, lifestyle factors, and personal goals.
When to Seek Professional Support
Chronic stress is common in modern life, but it does not have to be something you simply live with. If you are experiencing ongoing fatigue, poor sleep, digestive symptoms, or mood fluctuations, chronic stress may be playing a role. A consultation can help identify possible underlying contributors to your concerns and guide the creation of a personalized plan to support your health.
This article is for educational purposes only and is not intended to replace individualized medical advice. Please consult a qualified healthcare provider to determine what is appropriate for you.
References
Alotiby A. (2024). Immunology of Stress: A Review Article. Journal of clinical medicine, 13(21), 6394. https://doi.org/10.3390/jcm13216394
Herman, J. P., McKlveen, J. M., Ghosal, S., Kopp, B., Wulsin, A., Makinson, R., Scheimann, J., & Myers, B. (2016). Regulation of the Hypothalamic-Pituitary-Adrenocortical Stress Response. Comprehensive Physiology, 6(2), 603–621. https://doi.org/10.1002/cphy.c150015
Iwasa, T., Matsuzaki, T., Yano, K., Mayila, Y., & Irahara, M. (2018). The roles of kisspeptin and gonadotropin inhibitory hormone in stress-induced reproductive disorders. Endocrine journal, 65(2), 133–140. https://doi.org/10.1507/endocrj.EJ18-0026
Lo Martire, V., Caruso, D., Palagini, L., Zoccoli, G., & Bastianini, S. (2020). Stress & sleep: A relationship lasting a lifetime. Neuroscience and biobehavioral reviews, 117, 65–77. https://doi.org/10.1016/j.neubiorev.2019.08.024
McCosh, R. B., Breen, K. M., & Kauffman, A. S. (2019). Neural and endocrine mechanisms underlying stress-induced suppression of pulsatile LH secretion. Molecular and cellular endocrinology, 498, 110579. https://doi.org/10.1016/j.mce.2019.110579
Petrowski, K., & Kahaly, G. J. (2025). Stress and Thyroid Function-From Bench to Bedside. Endocrine reviews, 46(5), 709–735. https://doi.org/10.1210/endrev/bnaf015
Russell, G., & Lightman, S. (2019). The human stress response. Nature reviews. Endocrinology, 15(9), 525–534. https://doi.org/10.1038/s41574-019-0228-0
Son, Y. L., Ubuka, T., & Tsutsui, K. (2022). Regulation of stress response on the hypothalamic-pituitary-gonadal axis via gonadotropin-inhibitory hormone. Frontiers in neuroendocrinology, 64, 100953. https://doi.org/10.1016/j.yfrne.2021.100953
Tong, R. L., Kahn, U. N., Grafe, L. A., Hitti, F. L., Fried, N. T., & Corbett, B. F. (2023). Stress circuitry: mechanisms behind nervous and immune system communication that influence behavior. Frontiers in psychiatry, 14, 1240783. https://doi.org/10.3389/fpsyt.2023.1240783
Zhang, J., Huang, J., Aximujiang, K., Xu, C., Ahemaiti, A., Wu, G., Zhong, L., & Yunusi, K. (2018). Thyroid Dysfunction, Neurological Disorder and Immunosuppression as the Consequences of Long-term Combined Stress. Scientific reports, 8(1), 4552. https://doi.org/10.1038/s41598-018-19564-y
[1] Russell, G., & Lightman, S. (2019). The human stress response. Nature reviews. Endocrinology, 15(9), 525–534. https://doi.org/10.1038/s41574-019-0228-0
[2] Herman, J. P., McKlveen, J. M., Ghosal, S., Kopp, B., Wulsin, A., Makinson, R., Scheimann, J., & Myers, B. (2016). Regulation of the Hypothalamic-Pituitary-Adrenocortical Stress Response. Comprehensive Physiology, 6(2), 603–621. https://doi.org/10.1002/cphy.c150015
[3] Petrowski, K., & Kahaly, G. J. (2025). Stress and Thyroid Function-From Bench to Bedside. Endocrine reviews, 46(5), 709–735. https://doi.org/10.1210/endrev/bnaf015
[4] Zhang, J., Huang, J., Aximujiang, K., Xu, C., Ahemaiti, A., Wu, G., Zhong, L., & Yunusi, K. (2018). Thyroid Dysfunction, Neurological Disorder and Immunosuppression as the Consequences of Long-term Combined Stress. Scientific reports, 8(1), 4552. https://doi.org/10.1038/s41598-018-19564-y
[5] Jansen HI, Boelen A, Heijboer AC, Bruinstroop E and Fliers E (2023) Hypothyroidism: The difficulty in attributing symptoms to their underlying cause. Front. Endocrinol. 14:1130661. doi: 10.3389/fendo.2023.1130661
[6] Son, Y. L., Ubuka, T., & Tsutsui, K. (2022). Regulation of stress response on the hypothalamic-pituitary-gonadal axis via gonadotropin-inhibitory hormone. Frontiers in neuroendocrinology, 64, 100953. https://doi.org/10.1016/j.yfrne.2021.100953
[7] Son, Y. L., Ubuka, T., & Tsutsui, K. (2022). Regulation of stress response on the hypothalamic-pituitary-gonadal axis via gonadotropin-inhibitory hormone. Frontiers in neuroendocrinology, 64, 100953. https://doi.org/10.1016/j.yfrne.2021.100953
[8] McCosh, R. B., Breen, K. M., & Kauffman, A. S. (2019). Neural and endocrine mechanisms underlying stress-induced suppression of pulsatile LH secretion. Molecular and cellular endocrinology, 498, 110579. https://doi.org/10.1016/j.mce.2019.110579
[9] Iwasa, T., Matsuzaki, T., Yano, K., Mayila, Y., & Irahara, M. (2018). The roles of kisspeptin and gonadotropin inhibitory hormone in stress-induced reproductive disorders. Endocrine journal, 65(2), 133–140. https://doi.org/10.1507/endocrj.EJ18-0026
[10] Lo Martire, V., Caruso, D., Palagini, L., Zoccoli, G., & Bastianini, S. (2020). Stress & sleep: A relationship lasting a lifetime. Neuroscience and biobehavioral reviews, 117, 65–77. https://doi.org/10.1016/j.neubiorev.2019.08.024
[11]
Leigh, S. J., Uhlig, F., Wilmes, L., Sanchez-Diaz, P., Gheorghe, C. E., Goodson, M. S., Kelley-Loughnane, N., Hyland, N. P., Cryan, J. F., & Clarke, G. (2023). The impact of acute and chronic stress on gastrointestinal physiology and function: a microbiota-gut-brain axis perspective. The Journal of physiology, 601(20), 4491–4538.
[12] Alotiby A. (2024). Immunology of Stress: A Review Article. Journal of clinical medicine, 13(21), 6394. https://doi.org/10.3390/jcm13216394
[13]
Tong, R. L., Kahn, U. N., Grafe, L. A., Hitti, F. L., Fried, N. T., & Corbett, B. F. (2023). Stress circuitry: mechanisms behind nervous and immune system communication that influence behavior. Frontiers in psychiatry, 14, 1240783. https://doi.org/10.3389/fpsyt.2023.1240783