Inclusion Criteria:  Healthy individuals with celiac disease BMI 18.5-27 18-65 years  Exclusion Criteria:  chronic metabolic diseases, such as diabetes (type 1 and 2), cardiovascular diseases, cancer the last six months gut diseases, including chron's disease, ulcerative colite food allergies or intolerance, except for coliac disease pregnant and/or lactating smokers BMI <18.5 and >27 planned weight reduction and/or 5% weight change the last three months blood donor the last two months and during the study period not willing to stop using dietary supplements, including probiotic products, cod liver oil etc, four weeks before and throughout the study use of antibiotics < three months before study start and throughout the study period alcohol consume > 40 g/day hormone treatment (except for contraceptives)