Sex function is controlled by two different parts of the human nervous system working at the same time. One set of nerves controls automatic body activities that go on without our attention such as the digestion of food. These two different sets of nerves have to work together to accomplish sexual intercourse. If one set of nerves works too much or not enough, sexual function is disrupted. Finally, it has been said that the most important sex organ is the brain.
Amphetamines activate the fight or flight set of nerves.
The addict loses interest in work, play, family, and sex. Buffum J, Moser C. MDMA and human sexual function. Freeman R. Autonomic nervous system. The ice age. Demographic characteristics and use patterns reported by methamphetamine abusers in treatment.