This paper discusses the results of the first regional and bioarchaeological analysis of health in late Iron Age and Roman Britain. This tested the hypothesis that cultural and environmental changes in Dorset would result in changes to demography, stature, dental health and infectious disease. The study observed change to all health variables, supporting environmental and archaeological evidence for the introduction of urban centres, changes in living conditions, greater population movement, and development of the agricultural economy. Importantly, the study demonstrated that these responses did not reflect changes observed in other areas of Britain or Gaul.