Selenium Status Measured in Blood After a Higher Intake of Fish and Shellfish - a Randomized Dietary Intervention Study

The primary aim of this study is to investigate, whether higher intake of selenium rich food items such as fish and shellfish, is associated with higher selenium blood levels. The secondary aim is to investigate the uptake of selenium from fish and shellfish and the incorporation of selenium from those foods into proteins in the human body. Furthermore, the impact of the natural variation in the genes that are responsible for the accumulation of selenium in the proteins will be investigated.