It was always believed that erectile dysfunction in males is linked to lifestyle diseases. Now the study conducted in the United States has confirmed that fact. There are at least 18 million males over the age of 20 dealing with erectile dysfunction issue. The fact also gets support from the sale of drugs like Generic Viagra 150 mg and other doses of the medicine among males. Viagra overcomes any erection issue within 30 minutes. Since other methods to cure take time, males prefer Viagra or medicine for quick action and relief.