 Power: We need 100 individuals, where 50 complete the glutenfree diet, to find a different in IdaA1c of 1 with a power of 80 and significance of 0.05. The mean in previous cohorts was 10,7 after 12 months and Standard Deviation 2,0. 27. To find a difference in c-peptide we need 128 individuals in each group with an 80 power and significance level of 0.05. If we can use previous cohorts as controls we only need 58 patients in the intervention group. 