A study has shown that patients with low vitamin D levels in the blood are at increased risk of serious complications or death after surgery, cardiac surgery excluded. For each 5 ng/ml  increase of vitamin D in the blood the overall risk of death and complications after surgery decreased seven percent.

Swedish scientists wrote medical history when they discovered that supplementation with Q10 and selenium could halve a person's risk of dying from cardiovascular disease. Now, a 10-year follow-up of the Swedish study shows that taking these two supplements even has a notable long-term effect on cardiac function and lifespan.