UNLABELLED: Nutrition is an important biological factor, which affects largely on the development of the all functions of the human body. There is known association of the appearance of breast cancer with alimentary factors: inadequate consumption of fruits, vegetables, dairy products, excessive consumption of coffee, tea, sugar, salt, bread, fatty foods, overweight, early age of onset and frequent alcohol consumption. AIM OF THE STUDY: To study the prevalence of risk factors for breast cancer related to nutrition in the female population of the Omsk region. METHODS: An epidemiological (observational analytical) study of "case-control", which was participated by 1002 women (797 women without breast cancer; 205--with breast cancer). In the study there were used epidemiological, hygienic, sociological, statistical methods. RESULTS: Out of 13 risk factors for the development of breast cancer related to nutrition, for female residents of the Omsk region there were confirmed their importance: a significant consumption of black tea (OR: 5,182, CI: 95% 3,721 ÷ 7,218), an early age of onset of alcohol consumption (OR: 4,832, CI: 95% 3,477 ÷ 6,715), overweight (OR: 1,440, CI 95% 1,005 ÷ 2,062). Such factors as low consumption of fruit and dairy products, increased consumption of fats with high content of cholesterin, salt and coffee failed to confirm their relevance. CONCLUSION: In the female population of the Omsk region the leading risk factors for development of breast cancer related to diet, are: excessive consumption of black tea, early age of onset of alcohol use, high body mass index.