23.02.2006:
In a study on the prevalence of multiple sclerosis in Nordland county, Norway, by Alstadhaug et al in Tidsskriftet no. 4/2005 (1), a high-risk focus was found, as in the early 1950s (2), in the area inland of Bodø. I want to mention a relevant aspect from a detailed field study by Riddervold on food and its preservation in 1900 – 40 in the nearby area of Skjerstad (3). In comparison with eastern and central Norway, and less so with western Norway, pork consumption (by household) was definitely lower in northern Norway, still in 1977 – 79 (4). In the paper by Riddervold (3), however, a fairly...