Acupuncture Lowers Blood Pressure, Aids Hearing Health

A combination of specific body and ear acupuncture points significantly improved autonomic nervous system function and lowered blood pressure in a new randomized controlled trial. The study from Kadek Buja Harditya and colleagues found that a multimodal protocol produced greater benefits than single-point approaches or sham treatment, pointing to a potential non-drug intervention for cardiovascular regulation with implications for hearing health.

How the Study Tested Acupuncture’s Effect on Autonomic Balance

Researchers recruited 60 adults aged 20 to 60 and randomly assigned them to one of four groups for an eight-session protocol over four weeks. The first group received the full combination therapy: needling at the body point Neiguan (PC6) on the wrist, known for its cardiovascular effects, along with stimulation of the auricular vagus nerve point and the ear point Shen Men. The second group received only PC6 stimulation, and the third only the two ear points. A fourth group received sham acupuncture at non-therapeutic locations.

The team used objective physiological measures to track changes. They assessed autonomic nervous system function through heart rate variability (HRV), analyzing specific metrics: SDNN (overall variability), RMSSD (parasympathetic/vagal activity), and the LF/HF ratio (sympathetic-parasympathetic balance). Resting heart rate and both systolic and diastolic blood pressure were also recorded. Data analysis included paired tests within groups and ANOVA or Kruskal-Wallis tests for comparisons between the four groups.

Combination Therapy Outperformed Single-Point and Sham Approaches

The results, published in the source paper, showed a clear hierarchy of effectiveness. The group receiving the combined somatic and auricular acupuncture protocol demonstrated the most substantial improvements.

This group saw significant positive changes in all HRV parameters: increases in SDNN and RMSSD, and a decrease in the LF/HF ratio. These shifts collectively indicate enhanced overall autonomic flexibility, strengthened parasympathetic (rest-and-digest) tone, and a better balance with sympathetic (fight-or-flight) activity. Concretely, their resting heart rate dropped, and they experienced an average reduction in systolic blood pressure of 12.0 mmHg and diastolic pressure of 10.0 mmHg.

The groups receiving only PC6 or only the auricular points showed moderate, less pronounced improvements. The sham acupuncture group, critically, showed minimal to no change on these physiological measures. Statistical analysis confirmed that the differences in outcomes between the combination group and all other groups were significant (p < 0.05).

Connecting Blood Pressure Regulation to Hearing Health

The direct finding is that multimodal acupuncture can influence the autonomic drivers of hypertension. For a hearing health audience, this connection is highly relevant. The autonomic nervous system is deeply implicated in several auditory conditions. For instance, heightened sympathetic activity is a common feature in hyperacusis brain changes and can exacerbate the stress response in misophonia. Furthermore, research is exploring methods for reversing noise-induced amygdala plasticity, a process tied to fear and autonomic arousal.

By demonstrating a method to reliably improve autonomic balance—measured by HRV—this study provides a plausible mechanism for how such interventions could benefit patients. Reducing systemic stress and sympathetic overdrive may create a more stable neurological environment, potentially reducing the perceived intensity of tinnitus or lowering reactivity to sound. This aligns with research into other neuromodulation techniques, such as tDCS effects on tinnitus and hyperacusis pathways, which also aim to calm maladaptive neural networks.

Practical Implications and Future Directions

This work by Harditya, Padmiswari, and Strisanti moves beyond investigating acupuncture for symptom management alone. It identifies a specific, measurable physiological pathway—autonomic modulation—through which it may exert therapeutic effects. For clinicians and patients, it suggests that a combined approach targeting both body and ear may be more effective for cardiovascular and autonomic regulation than simpler protocols.

The implications extend to integrative treatment plans. A patient presenting with hypertension and comorbid sound sensitivity disorders might benefit from an intervention that addresses the shared autonomic dysfunction. While more research is needed to directly test acupuncture’s effects on conditions like tinnitus or hyperacusis, this study establishes a strong foundational link. It supports the concept that interventions promoting parasympathetic activity and systemic relaxation could be a valuable component of a holistic hearing health strategy, complementing sound therapy and counseling.