Practice pointsr 15 elements of well-being were identified in the literature and exploratory factor analysis revealed a four-factor structure of well-being in breast cancer survivors (BCS): recurrence worries, physical health, psychological adjustment and illness intrusiveness. r Analyses revealed that there was a stronger relationship between psychological adjustment and illness intrusiveness for young BCS with children. r Psychological distress (i.e., lack of psychological adjustment), illness intrusiveness and fear of recurrence co-occurred more frequently in young BCS with children than in BCS without children, thus potentially compromising their well-being. r Our findings indicate that young BCS with children are most in need of screening and interventions in these areas, and such initiatives should be incorporated in their medical care and visits.Aim: This exploratory study aimed to examine differences in well-being between young breast cancer survivors (BCS) with and without children. Materials & methods: Participants (n = 816) completed an online survey relating to quality of life, illness intrusiveness, fear of cancer recurrence, stress and social support. Results: Exploratory and confirmatory factor analyses revealed similar models of well-being between both groups, but with a stronger relationship between psychological adjustment and illness intrusiveness for BCS with children (r = -0.779, 95% CI: -0.711, -0.848 vs r = -0.525, 95% CI: -0.423, -0.627). Conclusion: Parenting compromises the overall well-being of young BCS with children and they would therefore benefit from interventions and social and oncological support programs, especially for those caring for minor children. In a recent population-based study of cancer survivors, Weaver et al. [1] examined the prevalence of parental cancer via the United States National Health Interview Survey (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007); they identified 13,385 adults with a history of cancer with one or more minor children under the age of 18. Only adults with minor children who were diagnosed with cancer less than 2 years before the survey were included in the study (n = 1769), but of that subset, approximately 85% of them were diagnosed under the age of 45 [1]. In the USA, the average age of breast cancer diagnosis is 61 years for women; but 11% of all new cases occur in women under the age of 45 [2]. Following these guidelines, we operationalized 'young breast cancer survivors' as individuals with a diagnosis of cancer under the age of 45 and who were currently considered cancer free [2]. A diagnosis of breast cancer at a young age can interfere with the demands of early adulthood and the short-and long-term effects of treatment can be especially problematic for this group [3]. Young breast cancer survivors with children (BCS with children) may, therefore, be a particularly vulnerable group because the stressors that accompany motherhood may compound the difficulties Breast Cancer Manag. (Epub ahead of print)