Inoue-Choi M, et al. - Researchers examined the health risks of non-daily cigarette smoking. They analyzed and pooled data from the 1991, 1992, and 1995 US National Health Interview Surveys, a nationally representative sample of 70,913 US adults (aged 18-95 years). Upon analysis of Cox proportional hazards regression using age as the underlying time metric, they estimated hazard ratios and 95% confidence intervals for death through 2011, stratified by 5-year birth cohorts in 2017. Non-daily smokers reported smoking a median of 15 days and 50 cigarettes per month and vs daily smokers who reported smoking a median of 600 cigarettes per month, respectively. Findings also revealed lower mortality risks in non-daily smokers vs daily smokers but these risks were still substantial.