Objective: To assess the relationship of smoking with depression and anxiet
y symptoms and with risk factors for depression.
Design and setting: A community survey conducted in Canberra in 1997.
Participants: 2725 persons aged 18-79 sampled from the electoral roll.
Main outcome measures: Smoking was investigated in relation to psychiatric
symptoms (anxiety, depression, alcohol misuse), sociodemographic characteri
stics (age, sex, education, occupational status), social stressors (divorce
, unemployment, financial difficulties, negative life events, childhood adv
ersity), personality (extraversion, neuroticism, psychoticism), and social
support (family and friends).
Results: Smokers had more depression and anxiety symptoms, more stressors a
nd lower socioeconomic status compared with non-smokers. The association be
tween smoking and psychiatric symptoms persisted even when stressors, socio
economic characteristics and other factors were statistically controlled.
Conclusions: Smoking is associated with poorer mental health. In helping pa
tients to give up smoking, doctors need to be aware that some may have unde
rlying mental health problems that require attention.