Males experience lowered testosterone levels, levels essential for development of secondary male characteristics. Users may experience impotency and infertility, pregnancy complications, and changes in sexual characteristics. Cocaine users have babies addicted at birth. Central Nervous System Marijuana use may result in poor transmission of nerve impulses. The result is impairment of speech, comprehension, memory and sleep.
Cocaine stimulates the central nervous system causing restlessness, tremors, and convulsions.
Cocaine alters normal electrical activity of the brain which can result in seizures or convulsions similar to epilepsy.