A vagal–immune convergence framework for the autonomic, peripheral immune and central neuroimmune effects of meditation
Siddhant Nikam, Nimisha Shankar Narayan
Brain Behavior and Immunity Integrative November 6, 2026 DOI: 10.1016/j.bbii.2026.100205 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Review Peer reviewed |
|---|---|
| Topics | Meditation |
| Key findings | Argues that meditation's effects on immunity are small and heterogeneous across meta-analyses, with more consistent down-regulation of NF-κB-related gene expression than effects on heart rate variability, C-reactive protein, or interleukin-6. Proposes that conflating mechanistically distinct practices contributes to this heterogeneity and presents a "Vagal–Immune Convergence" framework with falsifiable predictions, such as that socio-affective training will reduce stress-evoked interleukin-6 more than attention-based training. |
Abstract
Meditation is widely reported to reduce physiological markers of stress, yet the field lacks a mechanistic account that connects specific meditative practices to specific immune outcomes. This review integrates four literatures: (1) autonomic effects of meditation, framed by the neurovisceral integration model; (2) the molecular architecture of the efferent pathways through which the brain restrains inflammation — vagal–splenic cholinergic (α7 nicotinic receptor, JAK2–STAT3, NF-κB), sympathetic–adrenergic and glucocorticoid-receptor signalling; (3) afferent and central mechanisms, including vagal cytokine sensing, insular representation of inflammation and microglial priming and reprogramming; and (4) trial, transcriptomic and epigenetic evidence on meditation and immunity. Meta-analyses show small and heterogeneous effects on vagally mediated heart rate variability and circulating C-reactive protein and interleukin-6, with more consistent down-regulation of NF-κB-related gene expression. We argue that part of this heterogeneity reflects the conflation of mechanistically distinct practices. Focused-attention, open-monitoring, loving-kindness/compassion and slow-breath/mantra practices have dissociable neural signatures, but direct evidence that they produce different immune signatures is currently limited to a few endocrine and transcriptomic findings. We therefore present a Vagal–Immune Convergence framework in which each link is graded by the strength of its evidence, distinguish established mechanisms from hypotheses, and extend the framework to central neuroimmune targets. The framework yields falsifiable predictions, for example, that socio-affective training will reduce stress-evoked interleukin-6 more than attention-based training, and that baseline heart rate variability will moderate attention-based but not breath-based effects, and specifies designs to test them.
Comparable studies
Other narrative reviews on meditation, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| Mindfulness training as a clinical intervention: A conceptual and empirical review. Clinical populations | 2003 | Review | |
| Mindfulness: Theoretical Foundations and Evidence for its Salutary Effects | 2007 | Review | |
| Mindfulness Interventions | 2016 | Review | |
| Mind the Hype: A Critical Evaluation and Prescriptive Agenda for Research on Mindfulness and Meditation | 2017 | Review | |
| Mindfulness and acceptance: expanding the cognitive-behavioral tradition | 2005 | Review |
Citations in the library
Cites 25
- Meditation experience is associated with differences in default mode network activity and connectivity Proceedings of the National Academy of Sciences November 23, 2011
- Attending to the present: mindfulness meditation reveals distinct neural modes of self-reference Social Cognitive and Affective Neuroscience August 13, 2007
- Mindfulness meditation training alters cortical representations of interoceptive attention Social Cognitive and Affective Neuroscience June 11, 2012
- Intensive meditation training, immune cell telomerase activity, and psychological mediators. Psychoneuroendocrinology June 1, 2011
- Breath of Life: The Respiratory Vagal Stimulation Model of Contemplative Activity Frontiers in Human Neuroscience October 9, 2018
and 20 more in the library