Share this postBuild Back Better'9,000 IU of Vitamin D Required'Copy linkFacebookEmailNotesMore'9,000 IU of Vitamin D Required'The underestimation of vitamin D requirements means that a significant portion of the population remains deficient.Mathew AldredMar 20, 2025∙ Paid7Share this postBuild Back Better'9,000 IU of Vitamin D Required'Copy linkFacebookEmailNotesMore22ShareThis post is for paid subscribersSubscribeAlready a paid subscriber? Sign in