The Claim
Higher parasympathetic nervous system activity, as measured by high-frequency heart rate variability (HF-HRV), is associated with per-cell changes in gene expression in myeloid immune cells—including classical and non-classical monocytes and neutrophils—that result in reduced expression of pro-inflammatory genes, independent of changes in the proportions of these immune cell types.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
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.
See the scientific wording
Greater parasympathetic nervous system activity, indexed by high-frequency heart rate variability (HF-HRV), is associated with per-cell changes in gene expression in myeloid immune cells—particularly classical and non-classical monocytes and neutrophils—leading to reduced expression of pro-inflammatory genes, independent of shifts in immune cell proportions.
What the research says
1 studyWhen your body is calm and your heart rate variability is high, your nervous system sends signals to your immune cells to turn down inflammation genes and turn up virus-fighting genes—without changing how many of those cells you have.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.