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Uitgangspunten 15% THC-maatregel nader beschouwd

Assumptions underlying the 15 % THC measure in the Netherlands under scrutiny

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Samenvatting

Werd in 1976 bij de wijziging van de Opiumwet al rekening gehouden met het gehalte tetrahydrocannabinol (THC) in cannabis door hennepolie op lijst I te plaatsen, in 2011 volgde een aanbeveling voor een verdere ‘aanscherping’ op basis van het THC-gehalte. Anno 2013 ligt een ontwerpbesluit tot wijziging van de Opiumwet ter tafel waarin alle cannabisproducten met 15 % of meer THC worden toegevoegd aan lijst I van middelen met een onaanvaardbaar risico. Hasj en wiet met minder dan 15 % THC blijven op lijst II. Het doel van deze maatregel is tweeledig: enerzijds een vermindering van de gezondheidsrisico’s en anderzijds de illegale teelt en export van cannabis een slag toebrengen, door verhoging van de risico’s voor criminele ondernemers. In dit artikel zetten wij voor de volksgezondheidsdoelstelling uiteen welke uitgangspunten en aannamen hieraan ten grondslag liggen en in hoeverre deze door wetenschappelijk onderzoek worden ondersteund.

Abstract

In 1976 the change of the Opium Act in the Netherlands already took into account the content of tetrahydrocannabinol (THC) in cannabis by placing hemp oil in Schedule I. In 2011 a recommendation followed for further tightening the classification based on the THC content. In 2013 a bill was proposed stipulating that all cannabis products of 15 % or more THC should be classified in Schedule I, containing psychoactive substances with an unacceptable risk (hard drugs). Hashish and marijuana with less than 15 % THC remain in Schedule II. The purpose of this measure is twofold: reducing the public health risks and – by increasing criminal risk – to reduce illegal cultivation and export of cannabis. In this article we focus on the public health aspects and describe the assumptions underlying this ‘15 % THC measure’ and to what extent they are supported by scientific research.

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Notes

  1. Vóór 1 mei 2012, de datum van invoering van de Besloten club-criterium en het Ingezetenencriterium.

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Dankwoord

De auteurs danken Sander Rigter en Raoul Koning voor hun commentaar op conceptversies van het manuscript.

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Authors and Affiliations

  1. Programma Drug Monitoring van het Trimbos-instituut te Utrecht, Utrecht, Nederland

    Margriet van Laar, Peggy van der Pol & Raymond Niesink

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  1. Margriet van Laar
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  2. Peggy van der Pol
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  3. Raymond Niesink
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Correspondence to Margriet van Laar.

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van Laar, M., van der Pol, P. & Niesink, R. Grenzen aan gedogen. VERSLAVING 11, 44–56 (2015). https://doi.org/10.1007/s12501-015-0006-1

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