Notes on an evolutionary medicine

Under the influence of genetics: how transdisciplinarity leads us to rethink social pathways to illness

This article describes both sociological and genetic theories of illness causation and derives propositions expected under each and under a transdisciplinary theoretical frame. The authors draw propositions from three theories -- fundamental causes, social stress processes, and social safety net theories -- and tailor hypotheses to the case of alcohol dependence. Analyses of a later wave of the Collaborative Study on the Genetics of Alcoholism reveal a complex interplay of the GABRA2 gene with social structural factors to produce cases meeting DSM/ICD diagnoses. Only modest evidence suggests that genetic influence works through social conditions and experiences. Further, women are largely unaffected in their risk for alcohol dependence by allele status at this candidate gene; family support attenuates genetic influence; and childhood deprivation exacerbates genetic predispositions. These findings highlight the essential intradisciplinary tension in the role of proximal and distal influences in social processes and point to the promise of focusing directly on dynamic, networked sequences that produce different pathways to health and illness.

Of pride and prejudice: the role of sociology and social networks in integrating the health sciences

Calls have been issued for understanding the "contexts" or "environment" shaping the causes and consequences of health and health care. Existing efforts raise concerns about how a panorama of influences can be considered simultaneously. Sociology's view of contexts as social network structures that shape and are shaped in social interaction offers one key to resolving this dilemma. Because social networks have become central in the social, natural, and physical sciences, this perspective provides a common platform for bringing in sociology's rich theoretical and methodological insights. Yet, to do this well, three conditions must shape our response. First, all levels relevant to health and health care must be considered, separated out, and linked by network mechanisms. The genetic-biological level, perhaps the most foreign level to sociologists, represents the greatest need and best prospect for advancing a sociologically based solution. Second, room must be made to tailor models to populations, whether defined socially or medically. Third, sociologists must find a voice within "big science " to address problems from social construction to social causation that contribute to basic social processes as well as health. I trace developments in the Network-Episode Model as one theoretical starting point.