The THC content of hashish has significantly risen since the 1970s.
Research indicates that past year rates of LSD use among college students, young adults, and eighth, tenth, and twelfth graders show a sharp decrease over the last ten years.
Drug withdrawal symptoms from benzodiazepines are similar to that experienced in opioid withdrawal but are more intense and last longer.
Some Ecstasy users may become dehydrated through vigorous activity in a hot environment.