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Reactions to reduced nicotine content cigarettes in a sample of young adult, low-frequency smokers

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Abstract

Rationale

Reducing nicotine content in cigarettes to ≤ 2.4 mg per g of tobacco [mg/g] reduces smoking behavior and toxicant exposure among adult daily smokers. However, cigarettes with similar nicotine content could support continued experimentation and smoking progression among young adults who smoke infrequently.

Objectives

This study evaluated the threshold for nicotine in cigarettes that produces reactions associated with smoking progression in a sample of young adults who smoke infrequently.

Methods

Young adults (n = 87, 18–25 years, 49% female) using tobacco products ≤ 15 days per month completed three counterbalanced, double-blinded sessions, each measuring positive and negative subjective reactions to fixed doses of smoke from investigational cigarettes containing one of three different nicotine contents: normal (NNC; 15.8 mg/g); very low (VLNC; 0.4 mg/g); and intermediate (INC; 2.4 mg/g). In a final session, participants chose one of the cigarettes to self-administer.

Results

Post-cigarette breath carbon monoxide was greater for VLNC than for NNC (p < 0.001). Positive reactions were greater for NNC than INC (p < 0.001) and for INC than VLNC (p = 0.001). Negative reactions were greater for NNC than INC and VLNC (both p < 0.001); INC and VLNC did not differ. Cigarette choices did not differ from an even distribution (43% NNC, 25% INC, 32% VLNC), but choice for NNC or INC was associated with higher ratio of positive to negative reactions during the NNC and INC fixed dose sessions, respectively (p < 0.001).

Conclusions

Reducing nicotine content will likely lower the abuse liability of cigarettes for most young, low-frequency smokers. Additional work is needed to determine if compensatory smoking may lead to increased toxicant exposure, and if a subset of individuals choosing lower nicotine cigarettes may continue to smoke regardless of nicotine content.

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Funding

This research was supported by NIH grants R01 DA042532 (FJM), K01 DA043413 (LRP) and K23 DA039294 (MMS).

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Correspondence to Maggie M. Sweitzer.

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On behalf of all authors, the corresponding author declares no competing interests.

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Sweitzer, M.M., Pacek, L.R., Kozink, R.V. et al. Reactions to reduced nicotine content cigarettes in a sample of young adult, low-frequency smokers. Psychopharmacology 238, 2429–2438 (2021). https://doi.org/10.1007/s00213-021-05864-1

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  • DOI: https://doi.org/10.1007/s00213-021-05864-1

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