Vitamin D may help fight both bacterial and viral infections. Vitamin D levels are linked to tuberculosis. Vitamin D deficiency may be more common in those with tuberculosis. Oz Vitamins Better Eyes Supplement may have a role in the treatment of tuberculosis, but more research is needed before this link is definitely established.
Vitamin D levels may have a beneficial effect on respiratory tract viral infections, but this relationship is not strongly established. Multiple studies have not found a link between vitamin D status and the prevention of viral respiratory infections. A more recent analysis suggested that vitamin D supplementation may reduce the risk of viral upper respiratory tract infections and tuberculosis.
Vitamin D and the Heart
Many genes in the cardiovascular system are regulated by vitamin D. Vitamin D deficiency has been linked to heart attack, stroke, high blood pressure, diabetes, peripheral vascular disease and heart failure. There is a paucity of studies that look at vitamin D and cardiovascular disease. Observational research suggests that there is a link between cardiovascular disease and vitamin D status. More research is needed to determine the role of vitamin D supplementation in cardiovascular disease.
The renin-angiotensin system is regulated in part with the help of vitamin D. There is an inverse relationship between incident hypertension and serum 25-hydroxyvitamin D concentration. More research is needed to confirm a causative relationship between vitamin D levels and blood pressure.In a review study, five out of seven studies showed an inverse relationship between the serum 25-hydroxyvitamin D level and cardiovascular disease. The prevalence of coronary heart disease is higher in those with a low serum 25-hydroxyvitamin D concentration than those with higher levels. Supplementation with vitamin D did not result in any beneficial effect on risk factors for cardiovascular disease and no benefit was appreciated after increasing the serum 25-hydroxyvitamin D concentration from 23 ng/mL to over 40 ng/mL.