In the intricate tapestry of human emotion and cognition, the ability to perceive and interpret bodily sensations—known as interoception—is emerging as a crucial factor influencing self-harm and suicidal behavior. A landmark scoping review and meta-analysis published in Nature Human Behaviour sheds light on this subtle yet profound internal sensory capacity and its relationship to the complex phenomena of self-injury and suicidality. Bringing together data from nearly 37,000 participants across 66 studies, the research navigates through diverse dimensions of interoception and their distinct roles in mental health outcomes that have long remained enigmatic.
Interoception, broadly understood as the sensing of internal bodily states, encompasses multiple dimensions, each reflecting a different aspect of how we perceive, evaluate, and regulate signals from within. This new study carefully categorizes interoception into four validated dimensions: accuracy, sensibility, awareness, and a cognitive–emotional evaluation dimension termed ‘Other.’ By dissecting these components, researchers aim to untangle which facets of interoception bear the strongest associations with self-harming behaviors and suicidal ideation.
One of the most striking findings concerns interoceptive accuracy—the ability to correctly detect internal bodily signals, such as heartbeats or respiratory rhythms. Contrary to what might be expected, the analysis reveals only weak, non-significant links between accuracy and both self-harm and suicidal outcomes. This challenges simplistic assumptions that merely perceiving bodily signals with high precision might directly influence severe emotional distress or dangerous behavioral expressions.
In contrast, the dimension termed interoceptive sensibility emerges as a key player. This aspect captures individuals’ self-reported tendencies and trust in bodily sensations, as well as their ability to use those sensations for self-regulation during distress. The meta-analysis exposes generally negative associations between interoceptive sensibility and suicidal ideation, plans, and attempts. Specifically, greater trust in bodily signals and more effective self-regulation correlated with lower levels of suicidal behavior, underscoring the protective potential embedded in mindful bodily awareness.
Though data on interoceptive awareness were insufficient to include in a quantitative meta-analysis, the broader literature hints at its importance. Awareness involves an individual’s conscious recognition and integration of their internal state, a nuanced process that likely intersects with emotional regulation and cognitive appraisal, both critical in suicide risk. Future research targeting this dimension could yield deeper insights or unearth therapeutic pathways.
The ‘Other’ category, representing the cognitive–emotional evaluation of bodily signals, also reveals compelling connections. Deficits in how individuals interpret the significance or emotional meaning of bodily cues were positively associated with both non-suicidal self-injury (NSSI) and suicidal ideation. These findings suggest that disruptions not only in sensing but also in the interpretative and evaluative processing of internal signals may heighten vulnerability to self-harm.
Impressively, the review extends beyond behavioral correlations to explore the neural underpinnings that might be driving these associations. Neuroimaging studies implicated alterations in core interoceptive processing regions—the insula and prefrontal cortex. These brain areas orchestrate emotional awareness, decision-making, and adaptive regulation, all of which are impaired in individuals at risk of suicide. The convergence of interoceptive deficits and neural dysfunction in these zones hints at shared substrates for bodily self-awareness and suicidal behavior, although current evidence remains preliminary and exploratory.
The study’s comprehensive approach addresses a longstanding need to transcend fragmented and qualitative observations about interoception’s role in suicidality. By meta-analytically quantifying effect sizes across distinct interoceptive dimensions and suicidal outcomes, the research provides a clearer map for subsequent investigation. It challenges researchers and clinicians alike to consider not just emotional or cognitive risk factors but also foundational sensory processes that influence how distress is experienced and managed.
Beyond expanding the theoretical understanding of suicide risk, these findings hold promising clinical implications. Targeting interoceptive sensibility and cognitive–emotional evaluation through therapeutic interventions might equip individuals with enhanced capacities for bodily trust and regulation, potentially mitigating self-harm and suicidal tendencies. Approaches such as mindfulness-based therapies, biofeedback, and body-oriented psychotherapy are well-positioned to build upon these insights.
The scarcity of longitudinal and intervention studies identified in the review also signals the urgency for future research to establish causality and treatment efficacy. While most included studies were cross-sectional, prospective analyses could elucidate how changes in interoceptive processing either precede or follow episodes of self-harm or suicidal ideation, refining temporal models of risk.
This study marks a critical step toward integrating interoception into the broader psychopathological landscape. It invites an interdisciplinary dialogue spanning psychology, neuroscience, psychiatry, and behavioral medicine, encouraging exploration of how the body’s internal signals interface with mental states and behaviors that culminate in self-injury.
Ultimately, this meta-analysis does more than synthesize existing knowledge—it recalibrates our understanding of the embodied mind. By illuminating the nuanced role of interoception in self-harm and suicide, it opens promising avenues for innovation in both research methodology and clinical practice, holding the potential to save countless lives through more informed recognition and treatment of internal sensory processing.
As suicide remains one of the most urgent global health challenges, integrating bodily awareness into risk assessment models and therapeutic frameworks is not merely academic—it is a profound human imperative. The integration of interoceptive science into mental health paradigms could redefine prevention strategies and revolutionize interventions aimed at those silently battling internal turmoil.
Future exploration will undoubtedly delve deeper into specific neural circuits, developmental trajectories, and intervention mechanisms, striving to translate these foundational insights into tangible improvements in patient care. The interplay between mind and body is complex and intimate, and this study serves as a clarion call to embrace this complexity in seeking solutions to some of the most agonizing expressions of human suffering.
In this challenging frontier, interoception emerges not only as a scientific concept but as a vital key to understanding the lifecycle of distress that can culminate in self-harm and suicidal action—underscoring how deeply our sense of self is tied to the often overlooked whispers of our own physiology.
Subject of Research: Interoception and its relationship to self-harm and suicidal behavior
Article Title: Interoception in self-harm and suicide: a scoping review and meta-analysis
Article References:
Liu, B., Wu, Z., Xue, M. et al. Interoception in self-harm and suicide: a scoping review and meta-analysis. Nat Hum Behav (2026). https://doi.org/10.1038/s41562-026-02490-9
Image Credits: AI Generated
