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Meat and dairy food consumption and breast cancer: A pooled analysis of cohort studies

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Author: Missmer, S.A. · Smith-Warner, S.A. · Spiegelman, D. · Yaun, S.-S. · Adami, H.-O. · Beeson, W.L. · Brandt, P.A. van den · Fraserf, G.E. · Freudenheim, J.L. · Goldbohm, R.A. · Graham, S. · Kushi, L.H. · Miller, A.B. · Potter, J.D. · Rohan, T.E. · Speizer, F.E. · Toniolo, P. · Willett, W.C. · Wolk, A. · Zeleniuch-Jacquotte, A. · Hunter, D.J.
Type:article
Date:2002
Source:International Journal of Epidemiology, 1, 31, 78-85
Identifier: 236519
Keywords: Breast neoplasms · Dairy · Dietary studies · Epidemiology · Meat · Pooled analysis · cancer · cohort analysis · food consumption · health risk · adult · aged · article · breast cancer · cancer incidence · cancer invasion · cancer risk · cohort analysis · controlled study · dairy product · data base · disease association · egg · female · fluid intake · follow up · food intake · human · major clinical study · meat · medical assessment · North America · priority journal · prospective study · risk assessment · risk factor · Western Europe · Animals · Breast Neoplasms · Cohort Studies · Dairy Products · Eating · Effect Modifiers (Epidemiology) · Eggs · Female · Humans · Meat · Milk · Risk Factors

Abstract

Background. More than 20 studies have investigated the relation between meat and dairy consumption and breast cancer risk with conflicting results. Our objective was evaluate the risk of breast cancer associated with meat and dairy food consumption and to assess whether non-dietary risk factors modify the relation. Methods. We combined the primary data from eight prospective cohort studies from North America and Western Europe with at least 200 incident breast cancer assessment of usual food and nutrient intakes, and a validation study of dietary assessment instrument. The pooled database included 351 041 women 7379 of whom were diagnosed with invasive breast cancer during to 15 year of follow-up. Results. We found no significant association between intakes of total meat, red me white meat, total dairy fluids, or total dairy solids and breast cancer risk. Categor analyses suggested a J-shaped association for egg consumption where, comp to women who did not eat eggs, breast cancer risk was slightly decreased am women who consumed <2 eggs per week but slightly increased among women who consumed ≥1 egg per day. Conclusions. We found no significant associations between intake of meat or dairy produ and risk of breast cancer. An inconsistent relation between egg consumption risk of breast cancer merits further investigation.