Erectile dysfunction (ED) or impotence is sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual activity. John Brinkley initiated a boom in male impotence cures in the U.S. It's important to realize that impotence may be a symptom of a more serious health problem, so if you're impotent, seek professional medical help immediately. The former uses the peripheral nerves and the lower parts of the spinal cord, whereas the latter uses the limbic system of the brain. Surgery on the spinal cord, prostate, bladder, or pelvis can lead to impotence by damaging essential nerves, tissues, muscles, or arteries. Several types of FDA approved vacuum therapy devices are available with a doctor's prescription. If never, the problem is likely to be physiological; if sometimes (however rarely), it could be physiological or psychological. If you use these recreational drugs, however, you have bigger health problems than just impotence. Given the advances in medicine and nutrition research, however, it is no longer a scary thing. Other studies have suggested that Tribulus also acts by increasing the level of dehydroepiandrosterone (DHEA), a naturally occurring substance in the body believed to be important for a healthy sex drive. It is estimated that between 50% and 60% of diabetic men are impotent. If never, the problem is likely to be physiological; if sometimes (however rarely), it could be physiological or psychological. It works as follows: The cylinder is placed on the penis and the pump is then used to draw air out of the cylinder. Although they are often dismissed as ineffective solutions to impotence, more and more clinical research studies have found that herbs can help impotent men. Tests such as the bulbocavernosus reflex test are used to determine if there is sufficient nerve sensation in the penis. The former uses the peripheral nerves and the lower parts of the spinal cord, whereas the latter uses the limbic system of the brain.