Marlene Busko, for Medscape March 24, 2022 Researchers published the study covered in this summary on Research Square as a preprint that has not yet been peer reviewed. Key Takeaways Data from five sequential National Health and Nutrition Examination Survey (NHANES) reports using US population samples in 2009-2018 showed each 1-unit increase in serum levels of vitamin D3 (25-hydroxyvitamin...