Inclusion Criteria:  BMI 20-35kg/m2 opportunity to meet for 3 visits at the Department of Nutrition, University of Oslo, during the study period.  Exclusion Criteria:  Chronic disease (liver/kidney/metabolism) Alcohol overconsumption (>40g/day) Diabetes and high fasting blood glucose Pregnant/ breastfeeding or planning pregnancy during the study period High fish intake (>3 meals/week). Blood donation during the study period Difficulty following the study protocol. Smoking/snuffing Regularly use of anti-inflammatory drugs Regularly use of omega-3 supplements /cod liver oil.