RT Journal Article SR Electronic T1 Gall stones in a Danish population: fertility period, pregnancies, and exogenous female sex hormones. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 433 OP 439 DO 10.1136/gut.29.4.433 VO 29 IS 4 A1 T Jørgensen YR 1988 UL http://gut.bmj.com/content/29/4/433.abstract AB From a cross sectional study of gall stone disease ascertained by ultrasonography, the prevalence in relation to age at menarche, use of oral contraceptives, childbirths, breastfeeding, abortions, age at menopause, and menopausal hormone therapy was assessed. The random sample comprised 2301 women of Danish origin aged 30, 40, 50, and 60 years, of whom 1765 (77%) attended the investigation. Gall stone disease was significantly associated with young age at menarche, abortions, and multiple childbirth. Use of oral contraceptives was significantly associated with gall stone disease in univariate analysis, but not in multivariate analysis. Breastfeeding, age at menopause and menopausal hormone therapy were not associated with gall stones. These determining variables seemed sufficient to explain the higher prevalence of gall stone disease in women than in men.