A new addition to the department, the first meeting of the Bioarchaeology Reading Group on the 7th October, was a great success. A mix of postgraduate (masters and PhD) students and staff members, fuelled by biscuits, discussed the implications of Gowlandâs (2015) paper on bioarchaeology and the life course. It was perhaps interesting to note that this week the reading groupâs participants were 90% female, which could have implications for the direction of the discussion as there was focus on maternal health.
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The topic of the paper was agreed to be extremely interesting. Gowlandâs central argument was that stresses affecting a pregnant mother, such as famine, disease or social stress, can cause different phenotypic expression in the foetus due to epigenetic plasticity. Later in the foetusâs life these developmental stresses could cause greater susceptibility to diseases and may affect future generations as the foetus itself was affected. If socioeconomic circumstances can have intergenerational effects, including disease susceptibility and growth stunting, archaeological skeletal osteobiographies can no longer be considered individually. The paper had particular impact for all participants in the discussion as we thought back to our own family histories of stress, wondering if we had been affected, and perhaps worried (probably needlessly) about how we were already making our future generations susceptible to disease!
Discussions on the paper centred on some key themes. Beginning with the strengths and weaknesses of the paper, participants quickly picked up on some striking ethical issues that would be encountered in taking this work further. These particularly related to placing blame on an individual, particularly on the mother, for the health of an infant. Also, in testing historically stressed populations to find the long-reaching consequences of pan-generational stresses, would we somehow imply that population was biologically inferior? This discussion was lengthy and slightly off topic, so PhD student Belinda Tibbetts, who was running this weekâs session, brought us back on track.
We questioned what the study means for the field of human osteoarchaeology. It was generally agreed that it would be particularly hard to apply the theory of pan-generation phenotype plasticity (and expressions thereof) in a âstandardâ bioarchaeological situation, where the identity of the individual and their relationship with other individuals in the sample is unknown. We also worried about markers of palaeopathology, particularly stress indicators like enamel hypoplasia and lesions, which considering Gowlandâs article could now no longer relate directly to an individualâs life conditions, but indeed to their motherâs and grandmotherâs. We settled that until more work is carried out in this area we must continue to describe instances of palaeopathology as before, whilst keeping in mind that it could be an expression of generations of developmental stressors.
In short, the Bioarchaeology Reading Group had a great first meeting, with good discussions and well-made points. Keep an eye out for following sessions if youâre interested! While aimed at postgraduates, the session is also open for keen undergraduate students.
References
Gowland, R.L., 2015. Entangled lives: Implications of the developmental origins of health and disease hypothesis for bioarchaeology and the life course. American journal of physical anthropology, 158(4), pp.530-540.
Author: Emily Johnson is a Postgraduate Research Student in Archaeology at the University of Exeter. Interested in Emily and her research? Why not read her blog, or follow her on twitter!
Originally posted on Archaeology at Exeter.