We have received a paper from a GP testing the hypotheses that because 24,25 cholecalciferol has a similar structure to commercially available statins, it may act as an inhibitor of HMA co-reductase. He screened 350 patients in his practice and identified 77 who had a cholesterol concentration above 6.5 mmol per litre. Thirty-three of them agreed to return for a second test 2 weeks later.