Background/Objectives: Nutritional epidemiology shifted its focus from effects of single foods/nutrients toward the overall diet. Food-based dietary guidelines (FBDGs) are promoted worldwide to stimulate a healthy diet, including a variety of foods, to meet nutrient needs and to reduce the risk for non-communicable diseases. The objective of this study was to investigate whether adherence to the FBDG is associated with reduced femoral/carotid atherosclerosis and/or inflammation. Subjects/Methods: In October 2002, 2524 healthy men and women aged 35-55 years were recruited for the Belgian Asklepios cohort study. Subjects were extensively phenotyped, including echographic assessment of (carotid and femoral) atherosclerosis. A dietary index consisting of three subscores (dietary quality, diversity and equilibrium) was calculated to measure adherence to the Flemish FBDG, using data from a semi-quantitative food-frequency questionnaire. General linear models were used to investigate associations between these scores and cardiovascular (CV) risk factors and atherosclerosis and inflammation markers. Results: Women had better overall dietary scores than men (69 vs 59%). Participants with higher dietary scores showed better age-adjusted CV risk profiles (lower waist/hip ratio, blood pressure, non-high-density lipoprotein-cholesterol, blood triglycerides and homocystein), although most of these associations were only significant in men. Higher dietary scores were also inversely associated with inflammation makers (interleukin-6 and leukocyte count). Associations between diet and atherosclerosis were only found for femoral atherosclerosis and significance disappeared after adjustment for confounders. Conclusions: Better adherence to the Flemish FBDG is associated with a better CV risk profile and less inflammation, mainly among men. There was no direct effect on the presence of carotid or femoral atherosclerosis.
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