Erectile dysfunction is defined as the incapability to get or preserve an erection firm to the sufficient degree for intercourse. The condition is usually caused by a variety of mental and physiological reasons. In fact experts have come out and affirmed that erectile dysfunction can be a core symptom of many cardiac and nerve related ailments. Psychological reasons include depression, nervousness or anxiety or concern of any kind. Physiological causes can contain; · Heart illness and tapering of blood vessels. · Diabetes. · High blood pressure. · High cholesterol. · Obesity and metabolic syndrome. · Parkinson's disease. · Multiple s...