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Article Publish Status: FREE
Abstract Title:

B-Vitamin Intake from Diet and Supplements and Breast Cancer Risk in Middle-Aged Women: Results from the Prospective NutriNet-Santé Cohort.

Abstract Source:

Nutrients. 2017 May 13 ;9(5). Epub 2017 May 13. PMID: 28505069

Abstract Author(s):

Manon Egnell, Philippine Fassier, Lucie Lécuyer, Laurent Zelek, Marie-Paule Vasson, Serge Hercberg, Paule Latino-Martel, Pilar Galan, Mélanie Deschasaux, Mathilde Touvier

Article Affiliation:

Manon Egnell

Abstract:

Experimental studies suggest a protective effect of B-vitamins on breast cancer risk, potentially modulated by alcohol intake. However, epidemiological studies are limited, especially regarding non-folate B-vitamins. Furthermore, few studies included quantitative assessment of supplemental intake. This prospective study aimed to investigate the associations between intakes of B-vitamins (dietary, supplemental, total) and breast cancer risk. 27,853 women aged≥45 years from the NutriNet-Santé cohort (2009-2016) were included, with a median follow-up time of 4.2 years. Dietary data were collected using repeated 24 h records. A specific questionnaire assessed dietary supplement use over a 12-month period. A composition database of 8000 supplements was developed. Associations were characterized by multivariable Cox models, and 462 incident breast cancers were diagnosed. Dietary (HR= 0.74 (0.55, 0.99),-trend = 0.05), supplemental (HR= 0.61 (0.38, 0.98),-trend = 0.05), and total (HR= 0.67 (0.50, 0.91),-trend = 0.01) pyridoxine intakes were inversely associated with breast cancer risk. Total thiamin intake was borderline inversely associated with breast cancer risk (HR= 0.78 (0.61, 1.00),= 0.05). Statistically significant interactions between alcohol consumption and B-vitamin (thiamin, riboflavin, niacin, pantothenic acid, pyridoxine, folate, and cobalamin) supplemental intake were observed, the latter being inversely associated with breast cancer risk in non-to-low alcohol drinkers but not in higher drinkers. This large prospective study, including quantitative assessment of supplemental intake, suggests a potential protective effect of pyridoxine and thiamin on breast cancer risk in middle-aged women.

Study Type : Human Study

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