La conclusión se extrae de un estudio realizado con parejas de hermanos mellizos que publica "JAMA". El estudio muestra que aquellos que consumen marihuana antes de los 17 años tienen cuatro veces más probabilidades de iniciarse en otras drogas y más de seis veces de convertirse en drogodependiente que sus hermanos mellizos que no consumen marihuana. Otros factores que podrían influir en el abuso de drogas, según explican los investigadores de la Washington University de Saint Louis (Estados Unidos), son la depresión, el abuso sexual en la infancia o la separación o divorcio de los padres, no afectan a los resultados del estudio.
Por ello, consideran que atender de forma individualizada a estos adolescentes serviría para prevenir que sean drogodependientes en el futuro.
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