The Human Immunodeficiency Virus (HIV) is one of the worldâs most confusing and complex viruses. In this series, we will strip away the scientific jargon and provide a straightforward guide to HIV with the Elizabeth Glaser Pediatric AIDS Foundation (EGPAF)âs Director of Basic and Clinical Research Jeffrey Safrit.
In the body, L-citrulline is converted to the amino acid L-arginine, which goes on to make another important substance nitric oxide. And nitric oxide is the secret to hard, firm, healthy erections. Heres how it worksâ¦.
Their testes may become smaller and softer. Testosterone is required in order to have and maintain an erection. Low testosterone can cause erectile dysfunction. However, diseases of the nerves and blood vessels can also affect the penis and cause erectile dysfunction.heir testes may become smaller and softer. Testosterone is required in order to have and maintain an erection. Low testosterone can cause erectile dysfunction. However, diseases of the nerves and blood vessels can also affect the penis and cause erectile dysfunction.