Carsten Carlberg is a German biochemist, who is since more than 25 years full professor at the Institute of Biomedicine of the University of Eastern Finland in Kuopio. In addition, since early 2022 Dr. Carlberg is also ERA Chair holder for Nutrigenomics in the WELCOME2 project at the Institute of Animal Reproduction and Food Research, Polish Academy of Sciences in Olsztyn, Poland. During his time as a postdoc at the Central Research Unit of Roche in Basel (Switzerland), Dr. Carlberg was introduced to vitamin D and focused his investigations on the mechanisms of gene regulation by the micronutrient, its metabolites and synthetic analogues. Dr. Carlberg contributed with some 200 original and review articles to the field of vitamin D, in particular to the understanding of transcriptome- and epigenome-wide effects of vitamin D in human immune cells.