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Difficulty concentrating: Trouble focusing on tasks or thoughts
Archived from the original on 15 November 2025

Journal of Attention Disorders Kollins, SH, McClernon FJ, & Van Voorhees EE

They are not considered alternatives to cigarettes
Reynolds says that if parental advice were enough, we would surely not have watched the youth smoking rate soar by 73% between 1988 and 1998