According to a recent study by the Dutch company OrgaNext Research, activated vitamin D stimulates expression of the androgen receptor in skeletal muscle cells.

The Dutch scientist Lenus Kloosterboer, PhD, presented these breakthrough findings in Boston, USA, during the Annual Meeting of the Endocrine Society (June 4-8, 2011).

The active metabolite of the anabolic steroid nandrolone decanoate, Nandrolone, stimulates expression of the vitamin D receptor in skeletal muscle cells, as per the researchers.

The combination of nandrolone and hydroxylated vitamin D (NDD) has a synergistic effect on the in-vitro proliferation of human skeletal muscle cells, as per the research.