ECTS Abstracts (2015) 1 P313

Dietary Patterns in an Elderly Population with High Dairy Intake and their Relation with Bone Mineral Density: the Rotterdam Study

Ester de Jonge1, Fernando Rivadeneira1, Nicole Erler1, Albert Hofman1, Andre Uitterlinden1, Oscar Franco1 & Jessica Kiefte-de Jong1,2

1Erasmus MC, Rotterdam, The Netherlands; 2Leiden University College, Den Haag, The Netherlands.

Background: It is unclear whether overall dietary patterns influence bone mineral density (BMD) in populations with a relatively high dairy intake. The objective was to identify dietary patterns that are associated with BMD in Dutch middle-aged and elderly subjects.

Methods: Participants were subjects 50 years and over (n=5435) from The Rotterdam Study, a population-based prospective cohort study. Baseline intake of 28 pre-defined food groups was determined by a validated food frequency questionnaire. Dietary patterns were identified using Principal Component Analysis on these food groups. BMD of the femoral neck was measured by Dual Energy X-ray Absorption at baseline and at three subsequent visits between 1993 and 2004. Linear mixed modelling was used to analyse adherence to each pattern with repeatedly measured BMD (both in Z-scores). Results were stratified by status of body weight change.

Results: After adjustment for potential confounders related to lifestyle, socioeconomic status and prevalent chronic diseases, two dietary patterns were associated with high BMD. A “Traditional” pattern, characterised by high intake of potatoes, meat and fat (β=0.08; 95% CI: 0.05, 0.11) and a “Mediterranean-like” pattern, characterised by high intake of fruits, vegetables, poultry and fish (β=0.06; 95% CI: 0.04, 0.09). The “Processed” pattern, characterised by high intake of processed meat and alcohol was associated with low BMD (β=-0.03; 95% CI: -0.06, -0.01). The associations of the “Mediterranean- like” and “Processed” pattern were independent of body weight. Furthermore, no effect modification by body weight change was observed.

Conclusion: In a population with relatively high dairy intake, a “Mediterranean-like” and “Traditional” dietary pattern may have additional benefits for BMD whereas adherence to “Processed” dietary pattern may pose a risk for low BMD.

Disclosure: Nestlé Nutrition (Nestec Ltd.), Metagenics Inc. and AXA had no role in design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review or approval of the manuscript. Dr Fernando Rivadeneira received a grant from the Netherlands Organization for Scientific Research (NWO, VIDI 016.136.367). E. de Jonge is supported by a grant from the NWO for the graduate program of 2010 (project number: 022.002.023). This work is funded by Nestlé Nutrition (Nestec Ltd.), Metagenics Inc. and AXA.

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