The Impact of Cannabis Use on Health

Summary Chronic daily cannabis use has been shown to have long term harmful health effects, which in turn is expected to reduce labour market productivity. The evidence is less clear on the health impact of less frequent consumption, which is the more typical mode of use, and previous empirical studies fail to find robust evidence of an adverse impact of these modes of use on labour market productivity. This paper attempts to shed some light on this issue by directly estimating the impact of cannabis consumption in the past week and past year on health status using information on prime age individuals living in Australia. We find that cannabis use does reduce self-assessed health status, with the effect of weekly use being of a similar magnitude as smoking cigarettes daily. Moreover, we find evidence of a dose-response relationship in the health impact of cannabis use, with annual use having roughly half the impact of weekly use.Helpful comments on an earlier draft were received from Jan van Ours, Rosalie Pacula, two anonymous referees and participants at the 81st Annual Conference of the Western Economic Association International.     

Exploring the Structure of the Illegal Market for Cannabis

Summary This paper explores the middle and retail levels of the illegal market for cannabis in New Zealand using national household drug survey data. Those who reported purchasing half or full ounces of cannabis were defined as middle level market participants, while those who purchased smaller weights or merely used cannabis were defined as retail level participants. Those who had purchased cannabis were then further categorised as either cannabis ‘buyers’ (i.e. those who only purchased sufficient cannabis for their own consumption needs) or cannabis ‘dealers’ based on whether the surplus of cannabis they had, after their own personal consumption was deducted, exceeded the legal definition of cannabis dealing (i.e. possession of 28 g of cannabis or more). Nine per cent of those who had purchased cannabis in the previous year were categorised as middle level participants with 69% of these defined as middle level dealers and 31% as middle level buyers. Middle level cannabis dealers were projected to earn, on average, $2927 (NZD) net annual profit from selling surplus (rate of return of 34%). There was a wide variation in the projected net earnings of the middle level cannabis dealers with the majority earning only modest incomes (bottom 50% – $260 per year, top 10% – $25000 per year). Participants at all levels of the market commonly reported receiving cannabis for ‘free’ and this is likely to reflect the social sharing of cannabis during group consumption and non-cash payments for cannabis. This barter and gift giving tradition may provide cannabis users with a degree of insulation from any price increases for cannabis brought about by law enforcement activity. Cannabis selling creates a convenient source of income for heavy cannabis users to finance their own personal cannabis consumption, which may also dampen the impact of any rise in price brought about by law enforcement success.The 2003 HBS-Drug Use was funded by the New Zealand Ministry of Health and carried out as part of the Public Health Intelligence (PHI) Health Behaviours Survey Monitor. The statistical design for the 2003 survey was completed by Dr. Megan Pledger at SHORE, and by James L. Reilly from Statistical-Insights. The questionnaire was adapted and extended from the National Drug Survey questionnaire for the Health Behaviours programme by Dr. Chris Wilkins. Data collection was managed by Dr. Chris Wilkins, Rachael Lane, Joe Morley and Mary Blade. The statistical analysis of 2003 HBS-Drug Use was completed by Paul Sweetsur. The analysis in this paper was partly funded by the New Zealand Police.     

CANNABIS USE AND ITS EFFECTS ON HEALTH,EDUCATION AND LABOR MARKET SUCCESS

Cannabis is the most popular illegal drug. Its legal status is typically justified on the grounds that cannabis use has harmful consequences. Empirically investigating this issue has been a fertile topic for research in recent times. We provide an overview of this literature, focusing on studies which seek to establish the causal effect of cannabis use on health, education, and labor market success. We conclude that there do not appear to be serious harmful health effects of moderate cannabis use. Nevertheless, there is evidence of reduced mental well‐being for heavy users who are susceptible to mental health problems. While there is robust evidence that early cannabis use reduces educational attainment, there remains substantial uncertainty as to whether using cannabis has adverse labor market effects.     

Key Factors that Influence Consumer Preferences for Natural-Hyped Products

Natural-hyped products are receiving greater attention from and acceptance by consumers worldwide. Environmental factors that foster the demand for natural-hyped products, specifically hemp-based products include the deregulation of the cannabis industry and greater consumer desire for natural foods. Adding to this, the strategic use of stimulant type of cues (e.g., a cannabis leaf) included in product logos, ads, and packaging, seems to create hype associations when evaluating hemp-based products. In this context, this study presents empirical evidence (three experiments and two qualitative studies) that illustrates consumer preference for hemp-based products over ones that do not include hemp as an ingredient (hemp-free). The research focuses on identifying the psychological determinant that orients consumers towards hemp-based products. Findings suggest that the perceived naturalness is the psychological mechanism behind consumers positive evaluation of hemp-based products. Moreover, this study presents evidence that this evaluation is enhanced by the consumer's need for stimulation. Implications of the findings for the role of perceived naturalness and the need for stimulation in marketing strategies are discussed.