Recio-Rodriguez J, Gomez-Marcos M, Patino-Alonso M-C, Sanchez A, Agudo-Conde C, Maderuelo-Fernandez J, Garcia-Ortiz L. - 45389 N - Nutr J 2014 ; 13(1) : 37.

Association between fat amount of dairy products with pulse wave velocity and carotid intima-media thickness in adults

BACKGROUND:Examine the relation between consumption of low-fat vs. whole-fat dairy products with the carotid intima-media thickness and pulse wave velocity.

FindingsMETHODS:Cross-sectional and multi-center study. A total of 265 subjects were selected by stratified random sampling. Measurements: Information about dairy products was assessed using a semi-quantitative food-frequency questionnaire. Carotid intima-media thickness (IMT) was measured by carotid ultrasonography. Pulse wave velocity (PWV) was measured using the SphygmoCor-System.

RESULTS:Subjects (age 55.8 +/- 12.2) had mean values of IMT 0.68 +/- 0.10 mm and PWV 7.60 +/- 2.0 m/sec. The relationship between PWV and IMT with whole-fat and low-fat dairy intake groups, adjusted for age, sex, energy intake and other confounders revealed lower values of PWV in subjects with a consumption higher than 125 g/day of low-fat dairy and in those who did not intake whole-fat dairy. In a risk-factor adjusted regression model, an increase in PWV of 0.109 m/sec (95 % CI: 0.006 -0.213) was estimated for every 100 g/day increase in whole-fat dairy intake. Similarly, a decrease in PWV of 0.101 m/sec (95 % CI: -0.178 -0.023) was estimated for every 100 g/day increase in low-fat dairy intake, (p = 0.038 and p = 0.011 respectively). While for every 100 g/day increase in low-fat dairy intake, the estimate decrease of IMT was 0.005 mm (95 % CI: -0.010 -0.001), p = 0.011.

CONCLUSIONS:PWV and IMT showed an inverse association with the intake of low-fat dairy and a positive association with the intake of whole-fat dairy, so the amount of fat in dairy products can play an important role in arterial stiffness and subclinical atherosclerosis.