Can your heartbeat tell your immune system to calm down and fight viruses?
Parasympathetic neural activity and the reciprocal regulation of innate antiviral and inflammatory genes in the human immune system
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Higher vagal tone was linked to increased Type I interferon gene expression — a key antiviral defense — not just reduced inflammation.
Most research focuses on the vagus nerve only suppressing inflammation; this is the first human evidence it also turns up antiviral defenses, suggesting a dual immune boost.
Practical Takeaways
Practice 5 minutes of slow diaphragmatic breathing (4-6 breaths per minute) daily to potentially boost vagal tone and support your immune system’s antiviral response.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Higher vagal tone was linked to increased Type I interferon gene expression — a key antiviral defense — not just reduced inflammation.
Most research focuses on the vagus nerve only suppressing inflammation; this is the first human evidence it also turns up antiviral defenses, suggesting a dual immune boost.
Practical Takeaways
Practice 5 minutes of slow diaphragmatic breathing (4-6 breaths per minute) daily to potentially boost vagal tone and support your immune system’s antiviral response.
Publication
Journal
Brain, behavior, and immunity
Year
2021
Authors
R. Sloan, S. Cole
Related Content
Claims (6)
Your vagus nerve is like a brake pedal for your body's stress response — when it's active, it calms down your immune system and reduces inflammation. If it's not working well, your body stays in high-alert mode and gets more inflamed.
When your body is more relaxed and your heart rate variability is high, your immune cells tend to turn down the volume on inflammation-related genes, even if the number of those cells doesn’t change.
People with a higher heart rate variability — which means their heart naturally adjusts well to stress — tend to have less inflammation and stronger antiviral defenses in their immune cells, even when you account for things like age, weight, and lifestyle.
When your heart rate variability is higher—meaning your heart naturally slows and speeds up more—it might mean your body’s virus-fighting cells are more active, helping you fight off infections better.
When your body is calm and relaxed, your nervous system might help balance your immune system’s fight against inflammation and viruses — like a natural thermostat for your body’s defenses.