Conclusions: T2D risk factors are prevalent in young, female Pakistani immigrants in Oslo, Norway. It is not known whether the positive effect of breast feeding on child physical health extends into adult psychological adjustment. We examined changes in the social distribution of breast feeding and its effect on adult psychological well-being through the pathway of childhood psychological health by using the available cases from the National Child Developmental Study (NCDS, N= 7,750, born in 1958 ) and the 1970 British Cohort Study (BCS70, N=6,492 born in 1970 . Psychological well-being was defined in terms of measures of self-efficacy and psychological ill-health. Childhood adversity was measured by a dichotomised index created after tabulating information about parenthood, mother's age, mother's education, and presence of older siblings. Childhood psychosocial adjustment was measured by the Bristol Social Adjustment Guides for the NCDS and the Rutter scale graded by a teacher for the BCS70. We used logistic regression to test if there was an effect of breastfeeding on adult psychological well-being over and above the effects of adversity and psychosocial adjustment in childhood. The effect of breastfeeding appears to be gender specific. Findings showed that the magnitude of the effect of breastfeeding on psychological well-being was larger in women than in men. After accounting for the effect of childhood social adversity, breastfeed- Hormonal methods of contraception are highly effective, but in some users unscheduled vaginal bleeding occurs. If this is judged unacceptable it can lead to discontinuation, and hence risk of unwanted pregnancy and wasted health care resource. Data from a trial (where test drug had no consistent effect on bleeding) will be utilised to explore acceptability to women of differing patterns of unscheduled bleeding. Methods: Further analysis of data from a double-blind RCT (funded by NICHD), comparing intermittently administered antiprogestin CBD2914 with placebo, involving 136 new users of an hormonal intrauterine contraceptive implant. Six month follow-up comprised daily bleeding diaries and questionnaires at 3 points. Results: Days bleeding/spotting decreased markedly across the study, from 65% of days in the first three weeks to 32% in the last block (p<0.001). Side effects most commonly reported at 6 months were irregular bleeding (40%), mood swings (22%), bloating (21%) and skin problems (20%). By study end, 4 women had had removal of implant, and 10 were considering this in the near future, with main reasons given as weight gain (2 & 2), and bleeding (0, 2). Pattern of bleeding was reported as worrying by 40%, and more inconvenient than before by 41%. Total days bleeding was more strongly associated with 'worrying' than 'more inconvenient', which might be more strongly related to pattern, or individual propensity/tolerance, given that at baseline 26% of women reported having previously stopped a method of contraception for irregular bleeding. Total days bleeding was most strongly associated with reporting, as more problematic than before insertion, bleeding outside menstrual period, too many days bleeding, interruption to sex life, interruption to daily life, irregular periods, extra washing, and 'lose too much blood' (p<0.001). Further descriptive analyses will be presented. Conclusion: Better understanding is needed of women's judgements regarding unscheduled bleeding, and other side-effects, so as to discuss concerns and develop appropriate interventions. Although gender-role related personality traits agency and communion are positively related to psychological adjustment and physical health in both sexes, they have rarely been studied in the context of health behavior interventions. However, both might contribute to health goal attainment, potentially interplaying with domain-specific psychosocial factors: Agency, mediated by health-related self-efficacy, and communion, moderated by available social support for the goal at hand. We tested these hypotheses among the participants (N =385; women 73.2%, men 26.8%) of the GOAL Lifestyle Implementation Trial to prevent type 2 diabetes. Health-related self-efficacy was measured at baseline (T1) and after the intensive phase of the intervention at 3 months (T2). Perceived social support received during the intervention was measured at T2. Waist circumference, indicator of abdominal overweight, was measured at T1, at one-year (T3) and three-year (T4) follow-ups. Agency and communion were measured at T4 with the Personal Attributes Questionnaire (PAQ). Among women, higher agency was associated with a greater likelihood of at least 5% waist circumference reduction (WCR) by T3 (OR=2.70, CI 95% 1.19-6.15); among men, the association was reversed (but only marginally significant p=.057). Further analyses in women's sample showed that agency and increase in self-efficacy independently predicted T1-T3 WCR (both p<.05).