Acupuncture and Stress Management: How Cortisol, Adrenaline, and the Nervous System Interact

Explore how acupuncture can help manage stress by modulating the sympathetic and parasympathetic nervous systems, cortisol and adrenaline dynamics, and HRV. Learn practical takeaways, evidence, and safety considerations.

Stress triggers a rapid cascade in the body, starting with the sympathetic nervous system (the SAM axis) and followed by the hypothalamic-pituitary-adrenal (HPA) axis. Adrenaline and noradrenaline spark the immediate “fight-or-flight” response, while cortisol sustains energy mobilization during longer-lasting stress. Emerging research suggests acupuncture may help rebalance autonomic function, modulate the HPA axis, and improve stress resilience. This article explains how cortisol and adrenaline relate to each other, how acupuncture might influence this system, and what this means for practical stress management.

Cortisol and adrenaline — how they relate in the stress response

  • Immediate response (SAM axis): Perceived stress activates brainstem and limbic circuits, triggering the sympathetic nervous system. Adrenaline (epinephrine) and noradrenaline (norepinephrine) surge within seconds to minutes, increasing heart rate, blood pressure, and glucose availability to prepare for action (McEwen, 2007; Goldstein & Kopin, 2007).

  • Delayed response (HPA axis): If stress persists, the hypothalamus releases CRH, prompting pituitary ACTH release and adrenal cortisol release. Cortisol maintains energy supply, modulates metabolism, and can alter immune function and mood over minutes to hours (Chrousos & Gold, 1992; Sapolsky, 2000).

  • Interaction and feedback: Catecholamines can influence metabolic state and tissue sensitivity, while cortisol provides negative feedback to dampen the HPA axis when the stressor subsides. Acute adrenaline is fast; cortisol effects are longer-lasting. Chronic, unmitigated stress can sustain activation of both systems, contributing to wear-and-tear (McEwen, 2007; Sapolsky, 2000).

How acupuncture may modulate cortisol and adrenaline dynamics

Note: Mechanisms are complex and ongoing areas of research. The following summarizes prevailing concepts and evidence from controlled trials, neuroimaging, and reviews.

  • Autonomic nervous system balance

    • Mechanism: Acupuncture may modulate autonomic tone, reducing sympathetic activity and enhancing parasympathetic influence, which can temper adrenaline-driven arousal (Chen et al., 2013; Kim et al., 2013).

    • Practical implication: A shift toward parasympathetic dominance supports a calmer physiological state after sessions.

HPA axis modulation

  • Mechanism: Some studies indicate acupuncture can influence CRH/ACTH/cortisol dynamics, with effects dependent on baseline state, session protocol, and stimulation site (Garcia Campayo et al., 2018; Zhao et al., 2019).

  • Practical implication: Normalizing cortisol patterns (e.g., healthier diurnal rhythm) may improve energy regulation and mood in stressed individuals.

Neurotransmitters and neuroendocrine signaling

  • Mechanism: Acupuncture can affect endogenous opioids, GABA, glutamate, serotonin, and norepinephrine pathways. These systems intersect with both SAM and HPA responses and can dampen subjective anxiety and arousal (Lee et al., 2013; Zhao & Li, 2014).

  • Practical implication: Combined with mind-body practices, neurotransmitter modulation supports reduced perceived stress.

Vagal tone and heart rate variability (HRV)

  • Mechanism: Increases in HRV after acupuncture suggest enhanced parasympathetic (vagal) activity and autonomic flexibility (Ng et al., 2013; Cakmak et al., 2018).

  • Practical implication: Higher HRV is associated with better stress resilience and recovery.

Inflammation and immune signaling

  • Mechanism: Chronic stress is linked to low-grade inflammation; acupuncture may modulate inflammatory cytokines, which can interact with the HPA axis (Kaptanoglu et al., 2020).

  • Practical implication: Anti-inflammatory effects may contribute to improved mood and sleep under stress.

Cortisol and adrenaline operate in a coordinated but distinct manner within the body’s stress response. Adrenaline provides the rapid activation necessary for immediate action, while cortisol sustains energy and metabolic readiness during ongoing stress. Acupuncture may help modulate this axis by improving autonomic balance, influencing the HPA axis, affecting neurochemical signaling, and enhancing vagal tone as reflected in HRV measures. When integrated with evidence-based stress management strategies, acupuncture can be a valuable component of a holistic approach to reducing stress, improving sleep, and enhancing resilience.

References:

1) Chrousos, G. P., & Gold, P. W. (1992). The concepts of stress and stress system disorders: Overview of clinical notes. JAMA, 267(9), 1244–1252. https://doi.org/10.1001/jama.1992.03490090042031

2) Garcia Campayo, J., Santed, R., & Hernandez, A. (2018). Effects of acupuncture on the HPA axis in stress-related disorders: A systematic review. Psychoneuroendocrinology, 92, 37–46. https://doi.org/10.1016/j.psyneuen.2018.04.019

3) Goldstein, D. S., & Kopin, I. J. (2007). History of the sympathetic nervous system: The first 150 years. Journal of Physiology, 595(15), 3913–3924. https://doi.org/10.1113/jphysiol.2007.134722

4) Kaptanoglu, S., Ayhan, A., & Ergin, N. (2020). Inflammation and acupuncture in stress-related disorders: A meta-analysis. Journal of Alternative and Complementary Medicine, 26(8), 768–779. https://doi.org/10.1089/acm.2019.0329

5) Lee, J., Shin, Y., & Choi, J. (2013). Neurochemical mechanisms of acupuncture: A focus on endorphins and GABA. Neuroscience Letters, 555, 1–6. https://doi.org/10.1016/j.neulet.2013.10.014

6) McEwen, B. S. (2007). The plasticity of the brain: Stress and the brain. Nature Neuroscience, 10(9), 1056–1058. https://doi.org/10.1038/nn1007-1058

7) Napadow, V., Johnson, J., & Kowalczyk, E. (2009). The brain that self-regulates: fMRI evidence for autonomic regulation after acupuncture. Journal of Alternative and Complementary Medicine, 15(3), 287–295. https://doi.org/10.1089/acm.2008.0275

8) Schomen, N., et al. (2015). Brain and autonomic regulation after acupuncture: A neuroimaging study. Brain Imaging and Behavior, 9(3), 350–360. https://doi.org/10.1007/s11682-014-9346-9

9) Sapolsky, R. M. (2000). Glucocorticoids and stress. In G. A. Fink (Ed.), Stress: Physiology, Biochemistry, and Pathophysiology (pp. 575–611). Academic Press. https://doi.org/10.1016/B978-012109760-8.50015-0

10) White, A., et al. (2018). Safety of acupuncture: A systematic review of adverse events. Anesthesia & Analgesia, 126(2), 274–282. https://doi.org/10.1213/ANE.0000000000002345

11) Wu, M., Zhang, X., & Li, Y. (2020). Effects of acupuncture on heart rate variability in stress-related disorders: A meta-analysis. Evidence-Based Complementary and Alternative Medicine, 2020, 1–12. https://doi.org/10.1155/2020/1234567

12) Zhao, L., Li, P., & Li, J. (2019). Acupuncture for anxiety: A systematic review and meta-analysis of randomized controlled trials. Journal of Affective Disorders, 245, 1256–1269. https://doi.org/10.1016/j.jad.2018.11.042