This study intends to determine whether activation of mineralocorticoid receptors affects vascular function. Vascular function relies on two components of the blood vessel: the inner lining (endothelium) and the vascular smooth muscle. In specific aim 1, we seek to determine if that inhibition of the enzyme 11-beta hydroxysteroid dehydrogenase (11-beta-HSD) will impair endothelium-dependent vasodilation and/or vascular smooth muscle function.