Despite significant research, the direct and indirect causes of a population decline in the eponymous foragers of the Late Jōmon period (c. 4500–2300 BP) in Japan remains undetermined. Here, the authors examine the impact of nutritional stress, using scurvy as a case study, on Middle and a Late/Final Jōmon populations. While an increase in the prevalence of scurvy between the time periods is apparent, no associated change in age at death was observed. The authors argue that the Late Jōmon adapted their food-sharing practices in times of ecological stress, and they highlight the need to consider morbidity and mortality together in palaeopathological assessments and the growing evidence for a non-nutritional cause in the Late Jōmon population decline.

The late nineteenth and early twentieth century saw dramatic new developments in climatic medicine, particularly the institutionalisation of thinking about tropical hygiene. There were also more limited efforts to understand how hygiene theories should be applied in a polar environment. Studying the British National Antarctic Expedition (1901–1904), led by Robert Falcon Scott, helps us understand how these practices had both similarities and differences from applications of hygiene in other contexts. The expedition offers unique insights into debates about hygiene, environment, and health because of the important, and well documented, role that medics, naval officers and scientists played in organising logistical arrangements for the journey to Antarctica. In analysing the writings of expedition members and organisers, this paper examines the ways that the universal tools of hygiene theories were applied and developed in a polar environment. Many of the most acute threats seemed to come not from the outside environment but from the explorers’ supplies and equipment. There was general agreement on many issues. Yet the expedition’s organisers, medics and leadership had numerous arguments about the best way to preserve or restore health. These disagreements were the product of both competing medical theories about the cause of disease and the importance of embodied (and somewhat subjective) observations in establishing the safety of foods, atmospheres and environments in this period.

Sir Ernest Henry Shackleton’s Imperial Trans-Antarctic Expedition (ITAE) 1914–1917, consisted of two parties – a Weddell Sea party led by Shackleton with Endurance, and a supporting Ross Sea depot-laying party, led by Captain Aeneas L.A. Mackintosh with Aurora. The purpose of this research paper is to consider why the Ross Sea party contracted scurvy and the Weddell Sea party did not. The authors suggest that for the Ross Sea shore party there was ineffectual leadership, insufficient medical care and sledging with excessive loads, and an inadequate diet for sledging, in both energy and vitamin C content. In their second season, depletion of vitamin C was again evident with one person dying. The Weddell Sea party, ably led by Shackleton, not only faced the arduous task of sledging heavy stores and moving camps in thick snow, but also had to haul three boats over pressure ridges, before reaching open water and rowing to Elephant Island. Here, the men lived almost exclusively on a fresh meat diet and were not affected by scurvy. This is the final paper for the trilogy commemorating the Ross Sea party centenary (the others are Harrowfield, 2013, 2015).