Aims. To investigate the association between parental separation and a
lcohol consumption and problem drinking in early adulthood (at ages 23
and 33). Design. The study used longitudinal data from the 1958 Briti
sh birth cohort study, a large representative national sample followed
to age 33. Setting. Great Britain. Participants. 11 407 subjects were
interviewed at age 33 in 1991 (69% of the target population). Analyse
s are based on 4606 men and 4892 women with data at ages 23 and 33. Me
asurements. Units of alcohol consumed in the previous week at ages 23
and 33. Heavy drinking was defined as more than 20 units/week (women)
and more than 35 units/week (men). Problem drinking was indicated by t
he four-item CAGE measure. Information on parental separation was repo
rted by subjects at age 33; parental deaths were ascertained from data
recorded in childhood sweeps of the survey. Findings. At age 23, the
relationship between parental separation and alcohol consumption was w
eak and inconsistent, but by age 33 a stronger and more consistent rel
ationship had emerged. Higher levels of alcohol consumption, heavy dri
nking and problem drinking (odds ratios 1.29-1.90) were found for thos
e who had experienced parental divorce in childhood, but not later par
ental divorce or parental death. These results were not substantially
attenuated by possible mediating factors, such as marital status or so
cio-economic circumstances. Conclusions. The risk associated with earl
y parental divorce appeared to strengthen between ages 23 and 33. Life
-course factors influencing the manifestation of alcohol problems in t
hose from divorced families need to be identified.