It's interesting because this study was done in Spain, which reportedly only has about a 33% Vitamin D deficiency in the general population: https://pubmed.ncbi

It's interesting because this study was done in Spain, which reportedly only has about a 33% Vitamin D deficiency in the general population: https://pubmed.ncbi.nlm.nih.gov/21179052/ https://pubmed.ncbi.nlm.nih.gov/21179052/