A Translational Approach to the Mind–Brain–Body Connection

Abstract

Mental and physical health are closely tied, and a deeper understanding of how the mind, brain, and body are connected has the potential to substantially improve health outcomes. In particular, a translational approach that integrates research on mind–brain–body connections at multiple levels of analysis (e.g., basic science, patient-oriented, and intervention science perspectives) can contribute toward the development, targeting, and implementation of mechanistically informed and effective interventions to improve mental and physical health. The three articles in this special issue elucidate a range of biological and behavioral mechanisms within the mind, brain, and body that contribute to health. The varying levels of analysis examined in each article complement each other to arrive at deeper insights than any one article would alone. Taken together, their research highlights the added value of moving from separate mental and physical health care models toward holistic care, and of considering how context may inform “for whom” a given intervention is most effective.

Editor’s Note.

This is an introduction to the special issue “Mind–Brain–Body Connection.” Please see the Table of Contents here: http://psycnet.apa.org/journals/tps/9/2—JF

Mental and physical health are intimately linked. Research has found that mental and physical illnesses frequently occur in tandem, and aspects of psychosocial contexts (e.g., stress, adverse experiences) exert profound influences on health through a variety of mechanisms (Nelson et al., 2020; Sartorious, 2013). Interestingly, common neurobiological and behavioral mechanisms underlie several physical and mental health outcomes (Furman et al., 2019; Nusslock & Miller, 2016). Examining these mechanisms can increase scientific understanding of the etiology and trajectory of mental and physical pathology and provide insights that inform interventions to improve health and well-being broadly (Shonkoff et al., 2009). The purpose of this special issue is to present cutting-edge research examining bidirectional and mechanistic relationships between mental and physical health, with the goal of deepening our understanding of the intersection between the mind, brain, and body.

Taking a translational approach that integrates across multiple levels of analysis, from basic science to intervention research, can maximize both scientific and practical insights into the relationships between mental and physical health. For example, basic science and patient-oriented research can characterize populations with differential vulnerability as well as avenues to enhance treatment efficacy, and those findings can then be translated into interventions whose effectiveness and feasibility can be tested clinically and using intervention science approaches. In other words, through translational research, targeted, readily scalable interventions and policies to address the mind–brain–body connection, designed with a sophisticated understanding of mechanistic relationships between mental and physical health, may be realized (Horn et al., 2020).

The three articles included in this special issue demonstrate the value that can be gained from integrating translational research on this topic across multiple levels of analysis. They examine links between mental and physical health from basic science, patient-oriented, and intervention science perspectives, investigating multiple biological and behavioral mechanisms to provide rich insights into the mind–brain–body connection (Figure 1). All three studies support the idea that context, psychological response to context, and mental health are related to physical and sexual health (via biological and behavioral pathways). Taken together, their research contributes several insights relevant for clinical practice. These include the added value of moving from separate mental and physical health care models toward holistic care and considering how context may inform “for whom” a given intervention is most effective.

Figure 1.

Levels of Analysis Employed in Each Article Within This Special Issue

Note. Icons made by Freepik, Amethyst Prime, and Roundicons Premium from www.flaticon.com.

When considered in concert, the studies in this special issue provide a rich discussion of the multiple biological and behavioral mechanisms by which psychological constructs (e.g., social context, mental health) are linked to physical health (Figure 2). At the most basic level of analysis, Zajdel et al. (2023) examine how caregivers’ stress contexts are related to biological and behavioral markers of physical health: functioning of the hypothalamic–pituitary–adrenal (HPA) axis, an important physiological stress response system, systemic inflammation within the immune system, and self-reported assessment of physical health. They also investigate how caregivers’ coping style may moderate these associations and whether the effects of coping style on biological and self-reported physical health differ by context. They find evidence for the effects of stress context on physical health and moderation of the relationship between coping and physical health by context. Taking a patient-oriented research approach, Odette et al. (2023) review the literature on the relations between mental health (anxiety and depression) and nonbarrier contraceptive use in adolescent and young adult females. Their finding that anxiety and depression are associated with less consistent use of nonbarrier contraceptives in this population suggests a link between mental health (anxiety and depression) and physical health (pregnancy outcomes) via behavior (contraceptive use). From an intervention science perspective, Stenz and Jansen (2023) highlight the link between diet and depression, which is driven in part by diet effects on the gut microbiome, to argue that integrated and collaborative care by both dieticians and psychologists may enhance depression treatment. They survey dieticians and psychologists and find clinician-identified potential for collaborative care, as well as possible barriers to this approach.

Figure 2.

Mechanisms Examined by Each Article in This Special Issue

Note. Created in part with BioRender.com. Icons made by Freepik from www.flaticon.com.

Taken together, this research provides several important takeaways for clinical and public health interventions. First, all three studies suggest that addressing physical and mental health in an integrated, holistic manner, is likely to yield better outcomes for health policies and systems than the status quo silo approach. For instance, addressing and considering internalizing symptoms among female youth, alongside providing contraceptive care, most effectively supports both well-being and pregnancy prevention goals (Odette et al., 2023). Also, given the robust connection between diet and depression, increasing collaboration between dieticians and psychologists will likely create new inroads to treat depression, which is resistant to standard therapies in roughly 20%–30% of patients (Voineskos et al., 2020). As mental and physical health behaviors influence each other, new and effective interventions must consider the interacting role of interconnected biological systems with an individual’s embedded psychological and social contexts. Indeed, Zajdel and colleagues’ finding that social support coping is associated with better physical health for caregivers of typically developing children, but not care-givers of children with a rare or chronic disease, illustrates the role that contextual features have on mind–brain–body connections. Thus, different contexts may warrant different intervention strategies (Rutten et al., 2013), and studies that integrate such contextual understanding will contribute to the burgeoning field of precision intervention.

In conclusion, using a translational approach to examine connections between psychology and biology, mental and physical health—as this special issue does—provides critical insights for improving health and well-being. The variation in perspectives (i.e., basic science, clinical, and intervention) across the studies in this special issue allows them to complement one another synergistically, together providing more powerful insight than each would alone. The important conclusions found in these articles have broad relevance for professionals across a range of disciplines, including scientists, clinicians, and policymakers.

What is the significance of this article for the general public?

Psychological research that examines the mind–brain–body connection at multiple levels of analysis has the potential to improve mental and physical health outcomes if a translational approach is used to integrate their differing perspectives. This introduction illustrates, using the articles in this special issue, how powerful scientific and clinical insights can be gained by synthesizing across research that examines the mind–brain–body connection at multiple levels of analysis. The understanding gained from this integrative, translational approach is applicable to professionals across a range of disciplines, including scientists, clinicians, and policymakers.