title: Letter to the Editor: The J-shaped 25-hydroxyvitamin D concentration-cardiovascular disease mortality relation is very likely due to starting vitamin D supplementation late in life.
authors.affiliation: Sunlight, Nutrition, and Health Research Center P.O. Box 641603 San Francisco, CA 94164-1603 E-mail: wbgrant@infionline.net.
authors.forename: William B
authors.initials: WB
authors.lastname: Grant
mesh_terms: D002318:Cardiovascular Diseases / Q000401:mortality*; D005260:Female; D006801:Humans; D008297:Male; D014807:Vitamin D / Q000031:analogs & derivatives*; D014808:Vitamin D Deficiency / Q000097:blood* / Q000453:epidemiology*
chemical_list: D014807:Vitamin D