Research continues to link vitamin D levels with better COVID outcomes Is there a linear relationship between vitamin D levels and COVID mortality? New and compelling clinical research further cements the case, and even suggests a baseline level of vitamin D at which there’s theoretically zero mortality from the pandemic disease.
How to know if your vitamin D supplement is vegan? The average vitamin D3 supplement (or cholecalciferol) is made from lanolin, a yellow fat that comes from sheep's wool that is UV irradiated to create a concentrated cholecalciferol source. "Nothing wrong with lanolin," says Ferira. "It's a fine D3 source." It doesn't pose any significant safety concerns, per the Environmental Working Group (EWG), but it does come from sheep's wool, which is, ahem, not vegan.
Albert Shieh,corresponding author Rene F. Chun, Christina Ma, Sten Witzel, Briana Meyer, Brandon Rafison, Leon Swinkels, Tonnie Huijs, Sam Pepkowitz, Brett Holmquist, Martin Hewison, and John S. Adams, J Clin Endocrinol Metab. 2016 Aug; 101(8): 3070–3078. Published online 2016 May 18. doi: 10.1210/jc.2016-1871