16 Nov 2015 Blackmores Institute Researchers find link between specific vitamin D levels and heart disease risk 16 Nov 2015 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News Vitamin D deficiency is linked to serious health risks such as coronary artery disease, heart attacks, and strokes with a new study showing what level of deficiency puts someone at risk. Researchers at the Intermountain Medical Center Heart Institute in Salt Lake City, Utah, US, have found that patients are fine from a heart standpoint, and may need no further treatment, if their vitamin D level is anywhere above 15 nanograms per millilitre which is the equivalent of 37.5 nanomoles per litre. × To continue reading this article, please Log In or Sign Up for access.