Erectile dysfunction refers to the inability to develop or sustain an erect penis for satisfactory sexual experiences. This challenging situation may affect upwards of 40 million North Americans and may have psychological causes, physiological causes, or a combination. It is estimated that the vast majority of cases have at least some significant physiological contributor. Since spinal nerves stimulating the genital area during sexual situations are associated with the parasympathetic (aka rest and digest) nervous system, stress alone may play a central role. Other physiological factors may include circulatory issues, hormonal imbalances, drug, alcohol or tobacco use, or trauma to the region. In all cases, therapeutic foods should not be overlooked as powerful tools in maintaining sexual virility, even into advanced age.