We’ve heard a lot about the benefits of vitamin D for issues like bone health and nutrient absorption, and even weight loss, but there might be a hidden risk for those who frequent the supplement aisle for high doses of this superstar nutrient.
New research from the University of Copenhagen has found an association between cardiovascular deaths and both too-low and too-high levels of vitamin D in the blood.
Scientists and doctors have long determined that too-low levels of vitamin D can be harmful to overall health — and often recommend supplements, since vitamin D is generally obtained from sun exposure and isn’t readily available in the food supply. According to study author Peter Schwarz, MD, a professor in the Department of Clinical Medicine at the University of Copenhagen, the relationship between cardiovascular deaths and too-high Vitamin D levels is a new finding that’s worth our attention.
“We found this inverse J-shaped curve of mortality —which was surprising, as we expected that vitamin D should reach much higher levels to cause damage,” he tells Yahoo Health.
For the many who are told in their yearly checkup that their vitamin D levels are low and to take supplements indefinitely, this could be important news.
The study, published in the Journal of Clinical Endocrinology and Metabolism, tracked participants in the COPD-Study, which included data on follow-ups of 250,000 people over a wide range of ages from a period between 2004 to 2011. More than 16,000 of the participants were registered in the Danish Registry of Causes of Death, where researchers were able to determine mortality.