Introduction
Adoption can provide a child with love, stability, and opportunity. Yet adoption also begins with loss, the separation of a newborn from their biological mother. For some adoptees, this early rupture has lifelong effects.
Research shows higher risks of anxiety, depression, and substance use in adoptees (Brodzinsky, Gunnar, & Palacios, 2022; Wood et al., 2021). A growing body of work also links early life stress to immune changes that may raise vulnerability to chronic or autoimmune conditions (Danese et al., 2016; Chen et al., 2021). Understanding these risks does not diminish the value of adoption; it highlights the need for trauma-informed care, early support, and more rigorous research.
Adoption and Mental Health: Anxiety and Depression
Multiple studies report that adoptees, on average, face elevated risks for internalizing problems such as anxiety and depression versus non-adopted peers. Reviews describe how separation at birth, pre-placement stressors, and identity questions may contribute (Brodzinsky, 2021).
Notably, even adoption at birth, before prolonged adversity, has been associated with higher rates of atypical behavior and psychopathology compared with controls (Wood et al., 2021). Outcomes vary widely; many adoptees thrive, particularly in stable, supportive environments. Still, population-level findings justify routine screening and support.
The Role of Trauma and Attachment
Infants rely on proximity to a primary caregiver for core regulation and safety. When separation occurs at birth, it can affect attachment, stress response systems, and the developing sense of self. Adoptees commonly report themes of loss, grief, and questions of identity that may surface later as anxiety and mood symptoms (Brodzinsky, 2021).
Children adopted after time in care or institutions may also carry pre-placement adversities, such as instability or neglect, that further increase risk (McSherry et al., 2022).
Transracial Adoption and Identity
For many adoptees, the challenges of attachment and loss are compounded when adoption crosses racial, ethnic, or cultural lines. Research shows that transracial adoptees, those raised in families whose racial or ethnic background differs from their own, often face unique struggles with identity, belonging, and discrimination (Lee, 2003).
Growing up without mirrors of one’s heritage can intensify feelings of isolation. Adoptees may feel different within their own families as well as the broader community, leading to what some describe as a “double disconnection.” These experiences can deepen grief and contribute to anxiety, depression, or struggles with self-esteem.
As someone adopted into a family of a different racial and cultural background, I experienced firsthand how disconnection from my Puerto Rican roots shaped my sense of self and contributed to the trauma of feeling “different” both inside and outside my family.
At the same time, adoptees and families who actively engage with the child’s heritage, culture, and community report greater resilience and stronger identity formation (Mohanty & Newhill, 2006). This highlights the importance of intentional cultural socialization and acknowledgement of racial and ethnic differences within adoptive families.
Adoption and Addiction Risk
Addiction is multifactorial. Biological vulnerability, environment, and life experience all matter. Register-based studies in Sweden found that internationally adopted individuals had higher risks of psychiatric hospitalization and substance abuse compared with the general population, even after adjusting for confounders (Hjern, Lindblad, & Vinnerljung, 2002; Hjern & Vinnerljung, 2018).
Clinically, unresolved loss or fear of abandonment may show up as self-medication with substances. Given the signal in large cohorts, adoptees benefit from early, non-judgmental screening and access to care.
Early Trauma and the Body: Immune Dysregulation
Direct studies that link adoption at birth to autoimmune disease are limited. However, evidence connecting early life stress to immune dysregulation is strong. Reviews in psychoneuroimmunology show that childhood adversity is associated with elevated inflammatory markers such as CRP and IL-6, as well as altered stress-immune signaling (Danese & Lewis, 2017).
Mechanistic research suggests stress can disrupt gut-barrier integrity and the microbiome, which may contribute to autoimmune activation (Ilchmann-Diounou & Menard, 2020). Data from the Adverse Childhood Experiences (ACE) study found that cumulative childhood stress was associated with a significantly higher risk of hospitalization for autoimmune diseases decades later (Dube et al., 2009).
While “adoption” itself has not always been isolated as exposure, this line of evidence supports a plausible biological bridge from early trauma to immune-related disease (Chen et al., 2021).
Limitations in the Research
Important caveats remain. Many studies do not cleanly separate infants adopted at birth from those adopted later after multiple placements. Causality is difficult to prove because longitudinal datasets that follow adoptees from birth into adulthood with detailed health outcomes are scarce.
Addiction outcomes are often under-measured compared with anxiety and depression. For autoimmunity, much of the argument relies on studies of early stress broadly, such as adverse childhood experiences, rather than adoptee-specific cohorts (Dube et al., 2009). These gaps point to the need for targeted, long-term research.
Moving Forward: Trauma-Informed Care
Recognizing that adoption begins with loss encourages compassion and proactive support. Families, clinicians, and researchers each have a role in building healthier outcomes for adoptees.
- Families: Acknowledge grief, encourage open conversations, and support identity exploration.
- Clinicians: Screen for anxiety, depression, and substance use during key developmental stages such as adolescence and early adulthood. Provide evidence-based therapies and medical care when appropriate.
- Researchers: Develop longitudinal studies that track adoptees from infancy into adulthood, including physical and immune health markers alongside psychological outcomes.
Conclusion
Adoption offers new beginnings, yet separation at birth can leave invisible wounds. On average, adoptees face higher risks for anxiety, depression, and substance use, and there is credible evidence that early stress can influence immune function.
Not all adoptees experience these challenges, and many thrive. Awareness and trauma-informed care help families and professionals respond with compassion rather than stigma. More rigorous research will deepen understanding and improve long-term outcomes.
Every adoption story is unique. By listening to adoptees, supporting cultural identity, and acknowledging the complexity of adoption, we can move toward a future where adoptees are supported in both mind and body.
References
Brodzinsky, D., Gunnar, M., & Palacios, J. (2022). Adoption and trauma: Risks, recovery, and the lived experience of adoption. Child Abuse & Neglect, 130(Pt 2), 105309. https://doi.org/10.1016/j.chiabu.2021.105309
Chen, M. A., LeRoy, A. S., Majd, M., Chen, J. Y., Brown, R. L., Christian, L. M., & Fagundes, C. P. (2021). Immune and epigenetic pathways linking childhood adversity and health across the lifespan. Frontiers in Psychology, 12, 788351. https://doi.org/10.3389/fpsyg.2021.788351
Danese, A., & Lewis, S. J. (2017). Psychoneuroimmunology of early-life stress: The hidden wounds of childhood trauma? Neuropsychopharmacology, 42 (1), 99-114. https://doi.org/10.1038/npp.2016.198
Dube, S. R., Fairweather, D., Pearson, W. S., Felitti, V. J., Anda, R. F., & Croft, J. B. (2009). Cumulative childhood stress and autoimmune diseases in adults. Psychosomatic Medicine, 71 (2), 243-250. https://doi.org/10.1097/PSY.0b013e3181907888
Hjern, A., Lindblad, F., & Vinnerljung, B. (2002). Suicide, psychiatric illness, and social maladjustment in intercountry adoptees in Sweden: A cohort study. The Lancet, 360 (9331), 443-448. https://doi.org/10.1016/S0140-6736(02)09674-5
Hjern, A., & Vinnerljung, B. (2018). Can adoption at an early age protect children at risk from depression in adulthood? A Swedish national cohort study. BMJ Paediatrics Open, 2 (1), e000353. https://doi.org/10.1136/bmjpo-2018-000353
Ilchmann-Diounou, H., & Menard, S. (2020). Psychological stress, intestinal barrier dysfunctions, and autoimmune disorders: An overview. Frontiers in Immunology, 11, 1823. https://doi.org/10.3389/fimmu.2020.01823
Lee, R. M. (2003). The transracial adoption paradox: History, research, and counseling implications of cultural socialization. The Counseling Psychologist, 31 (6), 711-744. https://doi.org/10.1177/0011000003258087
McSherry, D., & McAnee, G. (2022). Exploring the relationship between adoption and psychological trauma for children who are adopted from care: A longitudinal case study perspective. Child Abuse & Neglect, 130 (Pt 2), 105623. https://doi.org/10.1016/j.chiabu.2022.105623
Mohanty, J., & Newhill, C. (2006). Adjustment of international adoptees: Implications for practice and future research agenda. Children and Youth Services Review, 28 (4), 384-395. https://doi.org/10.1016/j.childyouth.2005.04.013
Wood, E. K., Espinel, W. F., Hunter, J., Emmett, A., Skowbo, A. N., Schwandt, M. L., Shannon, C., Lindell, S. G., Barr, C. S., Suomi, S. J., & Higley, J. D. (2021). The effects of at-birth adoption on atypical behavior and anxiety: A nonhuman primate model. Journal of the American Academy of Child & Adolescent Psychiatry, 60 (11), 1382-1393. https://doi.org/10.1016/j.jaac.2021.04.021
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