This study consists of two arms; both of which are observational studies of molecular assessments of risk for tobacco related cancer. Arm A of the protocol is a pilot crosssectional study that evaluates the feasibility of obtaining and testing a genetic marker of cancer susceptibility (UGT1A7 polymorphisms) in smokers. It also explores smokers' interest in and comprehension of genetic risk assessments as possible tools for increasing motivation for smoking cessation. The second arm of this protocol, Arm B, is an observational prospective evaluation of a putative noninvasive biomarker of tobacco smoke exposure - urinary prostaglandin E-metabolite (PGE-M) - in smokers motivated to reduce and/or cease smoking.