Cigarette smoking has established effects on body weight. The effects
of weight concerns on smoking initiation, maintenance, cessation, and
relapse, however, are less clear. This review shows that weight concer
ns are related to smoking behavior in complex ways that differ dependi
ng on the smoking outcome (initiation, cessation, relapse), gender, an
d age. Dieting behaviors and general weight concerns appear to be posi
tively related both cross-sectionally and prospectively to smoking in
White adolescent females. In adults, weight concerns specific to smoki
ng cessation appear to be higher in current smokers and may have a neg
ative influence on cessation and relapse. General weight concerns, how
ever, do not differ by smoking status, nor do they appear to hinder ce
ssation or promote relapse. Dieting behavior is most prevalent in form
er smokers, least prevalent in current smokers, and intermediate in ne
ver smokers, suggesting that ex-smokers may be dieting to control cess
ation-related weight gain. Smoking cessation interventions that promot
e dieting to control weight have not been successful in preventing ces
sation-related weight gain, nor have they increased smoking cessation
rates. Population-based prospective studies are needed to determine th
e broader significance of weight concerns in relationship to smoking c
essation in adults. Efforts to address weight concerns in smoking inte
rvention programs may need to target a small subset of individuals for
whom weight control smoking is a significant barrier to cessation.