sentences:  Usage of some drugs is strongly correlated.For example, the consumption of seven illicit drugs (amphetamines, cannabis, cocaine, ecstasy, legal highs, LSD, and magic mushrooms) is correlated and the Pearson correlation coefficient "r">0.4 in every pair of them; consumption of cannabis is strongly correlated ("r">0.5) with usage of nicotine (tobacco), heroin is correlated with cocaine ("r">0.4) and methadone ("r">0.45), and is strongly correlated with crack ("r">0.5)
  
  Drug misuse is a term used commonly when prescription medication with sedative, anxiolytic, analgesic, or stimulant properties are used for mood alteration or intoxication ignoring the fact that overdose of such medicines can sometimes have serious adverse effects.It sometimes involves drug diversion from the individual for whom it was prescribed.