Regression coefficients were adjusted for age, sex, ethnicity, baseline income, baseline education, cigarette per day at each wave, smoking status at each wave, recentness since quitting at each wave, belief that filter reduces harm at each wave, and also baseline belief about harmfulness of light cigarettes
131-141, doi:10.1159/000510821
Over time, inflammation associated with popcorn lung causes lung tissues and airways to scar and narrow, causing breathing difficulties
Companies in the tobacco sector are continually adapting their product offerings and developing new product lines to meet changing regulations and evolving consumer preferences - heated tobacco products are a great example of this