Parkinson’s disease affects the way you move. It happens when there is a problem with certain nerve cells in the brain.
Normally, these nerve cells make an important chemical called dopamine. Dopamine sends signals to the part of your brain that controls movement. It lets your muscles move smoothly and do what you want them to [...]
Prostate cancer is not a cause of erectile dysfunction; however, treatments for the disease can cause ED. The current methods of treating prostate cancer, including surgery with radical prostatectomy (removal of the entire prostate gland), radiation therapy–whether by external beam or brachytherapy (seed implant)–and hormone therapy, can cause ED. When Can ED Occur Following Prostate [...]
The process of achieving an erection is complex and problems may occur for a variety of reasons. These problems can be psychological, physical, or a combination of the two.
Physical causes of ED are related to a breakdown or damage to the sequence of events that lead to an erection. This sequence involves nerve impulses in [...]
What Is the Penis?
The penis is the male sexual organ. It contains:
Two cylinder-shaped chambers called the corpora cavernosa, which run the length of the penis and contain a maze of blood vessels and sinuses (cavities).
The urethra, the channel in which urine and sperm flow, which runs along the underside of the corpora cavernosa.
Erectile tissue, which [...]
