Have you ever stopped and wondered why some people are more aggressive after taking certain drugs? The answer lies within our body chemistry. There are several types of drugs that affect brain function and cause aggression. These include stimulants such as amphetamine, cocaine, methamphetamine, and methylphenidate (Ritalin). Other drugs that increase aggression include opiates, barbiturates, benzodiazepines, and alcohol. There are also other drugs that induce aggression without affecting brain function. Some examples include phencyclidine (PCP), ketamine, and 3,4-methylenedioxymethamphetamine (MDMA or ecstasy). Aggression is defined as “a state of mind characterized by anger, hostility, belligerence, or resentment; a disposition to act violently or aggressively toward others.”… Read more