Questionnaire measures of attachment style and health behavior were completed by 287 university students on 2 occasions, 10 weeks apart. At Time 1, Ss also provided reports of emotionality and early family experiences of illness. Reports of early family illness showed theoretically meaningful relationships with attachment style. Symptom reporting was predicted most strongly by anxious/ambivalent attachment and negative emotionality, with the link between anxious/ambivalent attachment and symptom reporting partially mediated by negative emotionality. Visits to health professionals at Time 2 were directly related to reports of chronic illness in the family but inversely related to paternal illness and avoidant attachment, controlling for symptom reporting. The results are discussed in terms of theories of attachment and affect regulation.