Increased risk of breast cancer in first-degree relatives of Crohn's disease patients

Riegler G, Caserta L, et al. Dig Liver Dis. 2005 Sep 15
In this study, the prevalence of breast cancer in first-degree relatives of Crohn's disease patients, in particular the mothers, was more than double than in those of controls. This association, if confirmed, would suggest that there may exist common genetic and/or environmental factors for Crohn's disease and breast cancer.

Smoking and Breast Cancer

Ebbs, S. Int'l Journ of Clinical Practice, Vol 59 Issue 9 Page 999 - September 2005
The relationship between the carcinogens contained in tobacco smoke and the development and dissemination of cancer of the female breast is being slowly teased out. At present, the complexity of the interactions has produced an overall impression that suggests that there is no clear link between cigarette smoking and breast cancer occurrence and prognosis. However, recent investigations, including that of Fentiman et al. contained in this edition, are starting to offer some insight.