As described in the article what vitamins should I take the most important vitamin to supplement is vitamin D3. Research suggests that 50 to 80 percent of people have less than optimal vitamin D levels and could therefore benefit from supplementation. Furthermore, people who have extreme levels of deficiency are likely to incur severe health problems and have a greatly increase chance of developing heart disease and other life-threatening diseases.
After vitamin D, the other important vitamins to supplement are vitamin C and vitamin K2. Vitamin C deficiency is common and, like vitamin D deficiency, can lead to a host of health problems. Severe deficiency leads to scurvy, which leads to dramatic unhealthy weight loss and potentially death. Mild deficiency seems to increase death rates and rates of disease. K2 is important for many processes throughout the body and deficiency leads to poor blood coagulation. Although the dose is lower, vitamin K2 supplementation is also essential.
