what causes what
100

what drugs causes strokes that can cause brain damage

cocaine is the biggest cause 

200

what drug causes premature birth

pretty much everything (alcohol, marijuana,nicotine)

300

what drugs cause stillborn birth

some big ones are fentanyl and cocaine
400

what drugs can cause mental problems 

all of them but some drugs can cause much more severe problems (cocaine, fentanyl alcohol)
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