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J Diabetes Res. 2016;2016:6278709. Epub 2016 Oct 24.

Cannabis Use as Risk or Protection for Type 2 Diabetes: A Longitudinal Study of 18 000 Swedish Men and Women.

Author information

1
Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
2
Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
3
Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden; Centre for Epidemiology and Community Medicine, Stockholm County Council, Stockholm County, Sweden.

Abstract

Aims. Whether or not cannabis use may increase or decrease the risk of type 2 diabetes is not clear. We analyzed the association between cannabis and subsequent type 2 diabetes and if a potential positive or reverse association persisted after controlling for potential confounders. Methods. In this population-based cohort study, 17,967 Swedish men and women (aged 18-84 years), who answered an extensive questionnaire in 2002 (including questions on cannabis use), were followed up for new cases of type 2 diabetes (n = 608) by questionnaire (in 2010) and in health registers during 2003-2011. Odds ratios (ORs) with 95% CIs were estimated in a multiple logistic regression analysis. Potential confounders included age, sex, BMI, physical inactivity, smoking, alcohol use, and occupational position. Results. The crude association showed that cannabis users had a reduced risk of type 2 diabetes OR = 0.68 (95% CIs: 0.47-0.99). However, this inverse association attenuated to OR = 0.94 (95% CIs: 0.63-1.39) after adjusting for age. Conclusions. The present study suggests that there is no association between cannabis use and subsequent type 2 diabetes after controlling for age. To make more robust conclusions prospective studies, with longer periods of follow-up and more detailed information about cannabis use, are needed.

PMID:
27843955
PMCID:
PMC5098083
DOI:
10.1155/2016/6278709
[Indexed for MEDLINE]
Free PMC Article

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