Abstract
Research on mental health has traditionally separated the study of ill-being, including clinically defined mental and behavioural disorders and subthreshold problems, from the study of well-being, which encompasses factors such as life satisfaction and positive affect. Although previous reviews of studies primarily using self-report scales indicate that ill-being and well-being are distinct yet interconnected constructs, a deeper examination of their relationship is lacking. In this Perspective, we synthesize genetic, biological, developmental, psychosocial, societal, cultural and clinical research on ill-being and well-being. Our review reveals substantial genetic overlap and similar biological underpinnings for ill-being and well-being. By contrast, environmental factors and societal changes often exert divergent influences. We propose a differentiated multidisciplinary framework in which the shared and unique determinants, predictors, mechanisms and consequences of mental ill-being and well-being vary across levels of analysis, offering a more nuanced understanding of the interconnections.
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Acknowledgements
This work was supported by the Research Council of Norway (grant nos 262177, 262700, 274611, 288083, 300668, 300816, 301004, 301010, 314601, 314843, 320709, 323951, 324620, 325898, 331640, 334093, 336078 and 345560); the South-Eastern Norway Regional Health Authority (grant nos 2021070, 2023012 and 500189); NordForsk (grant nos 147386 and 156298); Moss Municipality, Norway; the County Governor of Oslo and Viken, Norway; the Royal Netherlands Academy of Arts and Sciences (grant no. TMB403); Stichting Volksbond Rotterdam; the Jacobs Foundation (grant no. 2023-1510-00); the Foundation DAM (grant nos 2021/FO347381 and 2021/FO347431); a Wellcome Trust Senior Research Fellowship (grant no. 220382/Z/20/Z); the Einstein Foundation Berlin (grant no. EZ-2019-555-2); the National Institutes of Health (grant no. R01DA054313); and the European Union (grant nos 818420, 818425, 101045526, 101073237 and 101088481). The views and opinions expressed are, however, those of the authors only and do not necessarily reflect those of the European Union or the European Research Council Executive Agency. Neither the European Union nor the granting authority can be held responsible for them. The funders had no role in the conceptualization or preparation of the manuscript.
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C.K.T., M.B., M.E., R.B.N., M.B.P., E.Y., R. Chegeni, E.R. and T.v.S. conceptualized the project. C.K.T., M.B., M.E., R.B.N., M.B.P., E.Y., E.R. and T.v.S. wrote the original manuscript. E.R.A., S.N.A., H.A., Z.A., T.B., D.B., E.J.B., L.D.B., O.D.B., M.G.N.B., A.C., R. Cheesman, R. Chegeni, L.C.-G., P.A.D., J.C.E., M.E., N.H.E., E.M.E., Y.F., L.F., S.F., S.H.F., E.F., L.G., K.G., T.H., L.S.H., V.K., M.K., K.G.K., J.L., T.H.L., N.M., H.H.M.M., L.M., T.A.M., T.E.M., N.N., T.S.N., L.B.N., E.N., A.O., W.P., Q.Q., R.R.-C., V.S., D.S., O.M.S., A.D.T., I.J.E.T., F.A.T., S.T., V.S.U. and E.G.V. provided comprehensive feedback on the manuscript. C.K.T. and T.v.S. produced the figures. All authors reviewed and approved the final manuscript.
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Tamnes, C.K., Bekkhus, M., Eilertsen, M. et al. The nature of the relation between mental well-being and ill-being. Nat Hum Behav (2025). https://doi.org/10.1038/s41562-025-02319-x
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DOI: https://doi.org/10.1038/s41562-025-02319-x