Gastroenterology

Gastroenterology

Volume 134, Issue 2, February 2008, Pages 432-439
Gastroenterology

Clinical–Liver, Pancreas, and Biliary Tract
Daily Cannabis Use: A Novel Risk Factor of Steatosis Severity in Patients With Chronic Hepatitis C

https://doi.org/10.1053/j.gastro.2007.11.039Get rights and content

Background & Aims: Steatosis is highly prevalent in patients with chronic hepatitis C (CHC) and has been reported to increase fibrosis and reduce the rate of viral eradication. Two recent studies indicate that endocannabinoids promote experimental steatosis via activation of hepatic CB1 receptors. We therefore investigated the impact of cannabis smoking on steatosis severity during CHC. Methods: A total of 315 consecutive patients with untreated CHC undergoing liver biopsy were included. Detailed histories of recent cannabis, alcohol, and tobacco use were recorded. Steatosis, activity, and fibrosis stage were assessed by 2 pathologists according to METAVIR. Marked steatosis was defined as ≥30%. Patients were categorized as cannabis nonusers (63.5%), occasional cannabis smokers (12.4%), or daily cannabis smokers (24.1%). Results: Multivariate analysis identified 6 predictors of marked steatosis: daily cannabis use (odds ratio [OR], 2.1; 95% confidence interval [CI], 1.01–4.5]), activity grade ≥A2 (OR, 2.1; 95% CI, 1.0–4.3), genotype 3 (OR, 5.4; 95% CI, 2.6–11.3), hyperglycemia or diabetes (OR, 5.1; 95% CI, 1.8–15.0), body mass index >27 kg/m2 (OR, 2.1; 95% CI, 1.0–4.3), and serum HCV RNA load (OR, 1.7; 95% CI, 1.0–2.9). Upon adjustment of HCV genotype (3 vs non-3) or alcohol intake (<30 g/day vs ≥30 g/day), marked steatosis was more frequent in daily cannabis users compared with occasional users and nonusers (P = .03 and P = .008, respectively). Conclusions: Our results identify daily cannabis smoking as a novel independent predictor of steatosis severity during CHC and strongly argue for a steatogenic role of the cannabinoid system. Cannabis use should be discouraged in patients with CHC.

Section snippets

Patients

Consecutive patients were recruited in a single tertiary care center between May 2003 and June 2006 if they met the following criteria: (1) HCV infection defined by a positive test for anti-HCV antibodies (Ortho HCV 3.0 ELISA test system; Ortho Clinical Diagnostics, Raritan, NJ) with detectable serum HCV RNA (Amplicor HCV 2.0 PCR test system; Roche Molecular Systems, Pleasanton, CA) documented for at least 6 months, (2) available liver biopsy specimen (15 mm or greater, with at least 6 portal

Study Population

Table 1 summarizes baseline characteristics of the overall study population (n = 315). There were 223 men and 92 women with a mean age at liver biopsy of 45.1 ± 10.9 years and an average BMI of 24.8 kg/m2. Ongoing alcohol abuse was reported by 13.3% of patients. Intravenous drug use was the most common route of transmission (44.1%). Genotype distribution showed a predominance of genotype 1 (62.5%), followed by genotype 3 (21.0%). Activity grade ≥A2 and significant fibrosis (≥F2) were found in

Discussion

Control of comorbidities is currently considered a desirable goal in patients with CHC, particularly in difficult-to-treat patients. A large majority of studies have repeatedly shown that steatosis is an independent predictor of liver fibrosis progression in these patients.3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 In addition, steatosis is an established factor of poor response to antiviral therapy, particularly in patients infected with non-3 genotypes.1, 10, 30 In the present study, we

References (42)

  • B. Julien et al.

    Antifibrogenic role of the cannabinoid receptor CB2 in the liver

    Gastroenterology

    (2005)
  • J. Ros et al.

    Endogenous cannabinoids: a new system involved in the homeostasis of arterial pressure in experimental cirrhosis in the rat

    Gastroenterology

    (2002)
  • L. Castera et al.

    Hepatitis C virus-induced hepatocellular steatosis

    Am J Gastroenterol

    (2005)
  • T. Asselah et al.

    Steatosis in chronic hepatitis C: why does it really matter?

    Gut

    (2006)
  • L. Fartoux et al.

    Impact of steatosis on progression of fibrosis in patients with mild hepatitis C

    Hepatology

    (2005)
  • C. Hezode et al.

    Daily cannabis smoking as a risk factor for progression of fibrosis in chronic hepatitis C

    Hepatology

    (2005)
  • L.F. Hourigan et al.

    Fibrosis in chronic hepatitis C correlates significantly with body mass index and steatosis

    Hepatology

    (1999)
  • L. Rubbia-Brandt et al.

    Steatosis affects chronic hepatitis C progression in a genotype specific way

    Gut

    (2004)
  • L. Castera et al.

    Effect of antiviral treatment on evolution of liver steatosis in patients with chronic hepatitis C: indirect evidence of a role of hepatitis C virus genotype 3 in steatosis

    Gut

    (2004)
  • L. Castera et al.

    Worsening of steatosis is an independent factor of fibrosis progression in untreated patients with chronic hepatitis C and paired liver biopsies

    Gut

    (2003)
  • C. Hezode et al.

    Impact of moderate alcohol consumption on histological activity and fibrosis in patients with chronic hepatitis C, and specific influence of steatosis: a prospective study

    Aliment Pharmacol Ther

    (2003)
  • Cited by (160)

    • Recreational cannabis use: French perspective of adverse effects

      2023, Cannabis Use, Neurobiology, Psychology, and Treatment
    • Medical cannabis as an alternative therapeutics for Parkinsons’ disease: Systematic review

      2020, Complementary Therapies in Clinical Practice
      Citation Excerpt :

      In addition, a cautionary note is recommended in patients with cardiovascular disease [30]. Cannabinoids may promote fatty liver disease and should be avoided in patients with chronic hepatitis C [34]. In patients with impaired liver or kidney function, the effect of THC and CBD may be increased or prolonged.

    • The end of convergence in developmental patterns of frequent marijuana use from ages 18 to 30: An analysis of cohort change from 1976–2016

      2018, Drug and Alcohol Dependence
      Citation Excerpt :

      While 4%–5% may appear to represent only a small number of individuals, based on U.S. Census Bureau estimates, 4.5% of those who were 30 years of age during 2008–2016 is estimated to be approximately 1.7 million individuals (U.S. Census Bureau, 2004, 2014). As noted previously, those who use marijuana frequently are at increased risk for addiction, cognitive impairment, and other health concerns (Becker et al., 2014; Gordon et al., 2013; Volkow et al., 2014; Whitlow et al., 2004; Hézode et al., 2008; Ishida et al., 2008), and the highest health risks are associated with chronic use that extends into age 30 and beyond (Auer et al., 2015; Epstein et al., 2015; Terry-McElrath et al., 2017). Results from the current study indicate that the number of individuals at high risk for such negative health outcomes due to frequent marijuana use at age 30 has increased markedly among recent cohorts.

    • The Mexican consensus on the treatment of hepatitis C

      2018, Revista de Gastroenterologia de Mexico
    View all citing articles on Scopus
    1

    A.M. and S.L. hold a patent in common with Sanofi-Aventis.

    2

    C.H., E.S.Z., F.R.-T., C.C., A.H., M.B.-A., F.M., and J.-M.P. report no conflict of interest.

    View full text