In epidemiological studies data on lifetime exposures are often self-reported. In this study we evaluate reliability of self-reported information on weight at eighteen years, age at menarche and menopause, and the reason for absence of menses. Furthermore we wanted to determine to what extent the reliability was affected by age, education and histo-pathological findings. Weight at age of 18 and age at menarche and menopause were reported on average with small differences. The differences in self-reported weight and age at menarche and menopause were greater in women with lower education. Furthermore selfreported weights were related to age – the difference increased with increasing age.