Vitamin D is sometimes called the sunshine vitamin. Studies show that moderate sun exposure will increase the body’s natural vitamin D, providing a boost in energy and a feeling of well-being. Some research has suggested that this may be because of vitamin D’s role in Nitric Oxide production. Studies may suggest that insufficient vitamin D may reduce the bioavailability of Nitric Oxide in veins and arteries. The CDC reports that vitamin D deficiency has risen to 25% of the population. Many researchers believe this deficiency may contribute to increases in blood pressure and cardiovascular disease risk. One serving of Cardio Miracle helps support normal vitamin D levels associated with optimal Nitric Oxide production.