A paper just published hypothesizes that vitamin D deficiency may be an important risk factor for erectile dysfunction (ED). Evidence cited supporting the link between low vitamin D and ED include that those with Asthma, depression, falls and fractures, multiple sclerosis, and periodontal disease are at greater risk of having ED. In addition, those with ED are at greater risk of developing cardiovascular disease, diabetes mellitus, and metabolic syndrome. All of these diseases are linked to vitamin D deficiency.
Vascular problems account for about half the cases of ED. There is a large body of research finding that vitamin D can maintain vascular health. The mechanisms appear to include suppressing the activity of the renin-angiotensin system, thereby lowering blood pressure, improving endothelial function, reducing inflammation, and reducing vascular calcification. Solar ultraviolet (UV) light is the primary source of vitamin D for most people. In addition, UV increases nitric oxide concentrations in the blood, which also appears to reduce the risk of ED.
Those diagnosed with ED should consider having serum 25-hydroxyvitamin D [25(OH)D] concentration measured, then adopt a program to increase concentrations to at least 40 ng/ml (100 nmol/l) through vitamin D supplementation and/or increased solar UVB exposure. Serum 25(OH)D concentrations should be re-measured a few months after starting such a program.