According to this study in pubmed, Iceland had amongst the highest, not lowest, incidence of UC. It may just seem anecdotally low to this nurse, because the population of Iceland small is small.
Pancolitis dx'd 1986, full med-free remission 88-97
Flaring or simmering ever since
10 20 mg pred, 100 mg Imuran
Probiotics (mainly Primal Defense)
Turmeric/circumin, various vitamins/minerals,
Low-carb version of Specific Carb Diet