[Breast cancer risk factors--possibilities of primary prevention].

In the article were presented the important breast cancer risk factors: genetic factors, family history, age, procreation behaviors, women's physiology (menarche, menopause), obesity, low physical activity, alcohol intake, oral contraceptive and menopausal hormonal replacement therapy. Possibilities of primary prevention and methods of calculation of individual breast cancer risk were also described. The value of the secondary prevention of the disease was emphasized. The primary and secondary prevention could substantially reduce burden of the breast cancer.