Nutt’s evidence-based rankings confirm what many would suspect. On the list of toxic substances, drugs like heroin, crack, and methamphetamine rank high. No question about it, they’re really bad for you and really bad for those around you. But, while heroin is so destructive it claims the number-two slot, it still couldn’t beat out the number-one scourge: alcohol. And tobacco—another legal staple of modern life—clocked in at number six, two ahead of marijuana, and just behind cocaine and methamphetamine. And what about MDMA, that supposed public enemy number one? It barely made the list,
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