Does magnesium hold the key to vitamin D benefits?, Published: Sunday 30 December 2018 by Yella Hewings-Martin PhD

“...Treatment with a magnesium supplement led to an increase in vitamin D levels in people who had low levels initially, but it reduced levels of the sunshine vitamin in those with high levels....”
learn more: https://www.medicalnewstoday.com/articles/amp/324022

Research has linked low vitamin D levels with a range of conditions, including bowel cancer. But, without magnesium, vitamin D may not function properly.