What topics does this cannabis study cover?

This study covers research on: THC.

Where was this research published?

Published in Addictive behaviors on September 25, 2026.

A 2024 U.S. survey links tobacco use with cannabis use and multiple routes

Q: What did this research study find?

**23.1% of U.S. adults reported cannabis use in the past 12 months** in the 2024 survey.

Cannabis use and route-specific administration among U.S. adults who do and do not use tobacco: Findings from the 2024 Health Information National Trends Survey.

Addictive behaviors • September 25, 2026 • Highly Relevant

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AI Summary

This nationally representative observational study asked how cannabis use and routes of administration differed between U.S. adults who currently used tobacco and those who did not. Researchers analyzed 2024 Health Information National Trends Survey data from 6,328 adults, comparing reported cannabis use in the past 12 months and adjusting for state cannabis legality, reasons for use, and sociodemographic characteristics.

An estimated 23.1% of adults reported past-year cannabis use. Among them, smoking and eating or drinking cannabis were commonly reported, and more than half reported using multiple routes. Cannabis use was more common among adults who currently used tobacco; among cannabis users, current tobacco users were also more likely to report smoking, vaping, or using multiple routes. These findings show associations, not that tobacco use causes cannabis use or determines health effects. Because the study is observational and relies on survey reports, it cannot establish causation or the health consequences of co-use; this is an abstract-based summary.

💡 Key Findings

23.1% of U.S. adults reported cannabis use in the past 12 months in the 2024 survey.

High

90%

Past-year cannabis use was reported by 46.0% of adults who currently used tobacco, compared with 17.4% of those who did not; the difference was statistically significant.

High

90%

Among adults reporting past-year cannabis use, current tobacco users were more likely to report smoking, vaping, or using two or more routes than cannabis users who did not currently use tobacco.

High

90%

The observational survey identifies associations but cannot establish that tobacco use causes cannabis use or determine the health effects of co-use.

High

95%

📄 Original Abstract

BACKGROUND: Cannabis use is common among people who use tobacco, however, few studies have examined route-specific cannabis use in the context of tobacco. This study provides nationally representative 2024 prevalence estimates for overall and route-specific cannabis use by tobacco use status. METHODS: Data were from the nationally representative 2024 Health Information National Trends Survey (N = 6328). Measures included past 12-month cannabis use and route of administration (smoking; vaping; dabbing; eating/drinking (consumed); applying a lotion; 2+ routes) and current any tobacco use. Multivariable logistic regression models examined the association between current tobacco use and past 12-month route-specific cannabis use, adjusting for state-level cannabis legality, reasons for use, and sociodemographic characteristics. RESULTS: An estimated 23.1% of US adults reported past 12-month cannabis use: 62.6% smoked, 57.6% consumed, 40.1% vaped, 15.2% applied lotion, and 12.4% dabbed, with over half (52.7%) endorsing >1 route of administration. Cannabis use was higher among adults who currently used tobacco products (46.0%) compared to those who did not (17.4%) (p < 0.001). Among those reporting past 12-month cannabis use, those who currently used tobacco (vs. did not) were more likely to smoke cannabis (73.4% vs. 55.6%, p = 0.001), vape cannabis (52.4% vs. 32.1%, p < 0.001), or use 2+ routes (60% vs 47.9%, p = 0.02). CONCLUSIONS: In 2024, nearly 1 in 2 adults who currently used tobacco reported using cannabis. Current tobacco use was significantly associated with increased likelihood of past 12-month cannabis use. Continued surveillance and research on the interplay of cannabis and tobacco use is needed to understand co-use health effects.

Paper Type

📄 Research

Publication

Journal: Addictive behaviors
Published: September 25, 2026
PMID: 42800375
DOI: 10.1016/j.addbeh.2026.108868

Authors (6)

Catherine Wilsnack Tobacco Control Research Branch, Division of Cancer Prevention and Population Sciences, National Cancer Institute, National Institutes of Health, USA. Electronic address: catherine.wilsnack@nih.gov.
Laurel P Gibson Tobacco Control Research Branch, Division of Cancer Prevention and Population Sciences, National Cancer Institute, National Institutes of Health, USA.
Joseph T Ciccolo Tobacco Control Research Branch, Division of Cancer Prevention and Population Sciences, National Cancer Institute, National Institutes of Health, USA.
Youn Ok Lee Tobacco Control Research Branch, Division of Cancer Prevention and Population Sciences, National Cancer Institute, National Institutes of Health, USA.
Rachel Grana Mayne Tobacco Control Research Branch, Division of Cancer Prevention and Population Sciences, National Cancer Institute, National Institutes of Health, USA.
+1 more authors