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Heroin, meth, and GHB cause most harm; alcohol ranks sixth, cocaine low due to limited use, per New Zealand study.
A new Substance Outcome Harm Index from Massey University, based on 4,800 New Zealanders’ experiences, finds heroin/morphine, methamphetamine, and GHB/GBL cause the most harm, while alcohol ranks sixth and cocaine ranks low due to limited use.
Nearly two-thirds reported no harm in six months, with mental health, finances, physical health, and relationships most affected.
The index, which evaluates 12 life areas beyond dependency, suggests harm depends more on usage patterns and context than inherent drug properties, aiming to guide fairer, evidence-based drug policies.
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La heroína, la metanfetamina y el GHB causan el mayor daño; el alcohol ocupa el sexto lugar, la cocaína baja debido al uso limitado, según el estudio de Nueva Zelanda.