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J Clin Lipidol. 2013 Sep-Oct;7(5):463-71. doi: 10.1016/j.jacl.2013.03.008. Epub 2013 Apr 3.

Effects of carbohydrate restriction and dietary cholesterol provided by eggs on clinical risk factors in metabolic syndrome.

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  • 1Department of Nutritional Sciences, University of Connecticut, 3624 Horsebarn Road Ext, U 4017 Storrs, CT 06269, USA.



There are a limited number of clinical interventions evaluating the effects of dietary cholesterol in individuals at elevated risk for type 2 diabetes and cardiovascular disease.


To investigate the effects of whole egg intake in adults with metabolic syndrome (MetS).


Men (n = 12) and women (n = 25) with MetS were instructed to follow a moderate carbohydrate-restricted diet (<30% energy) and randomly assigned to consume either three whole eggs (EGG, n = 20) or egg substitute (SUB, n = 17)/d for 12 weeks. Dietary intake, MetS parameters, and body composition were assessed at baseline and post-intervention.


Total carbohydrate (P < .001) intake decreased in all participants over time. The EGG group consumed more dietary cholesterol (P < .001) and choline (P < .001) than the SUB group. MetS was reduced in both groups, with improvements noted in dyslipidemia and decreases in waist circumference (P < .01), weight (P < .001), and percent body fat (P < .001). Reductions in plasma tumor necrosis factor-α (P < .001) and serum amyloid A (P < .05) were seen in the EGG group only. Notably, increases in dietary cholesterol were associated with reductions in plasma tumor necrosis factor-α (r = -0.340, P = .04). Plasma C-reactive protein, adiponectin, interleukin-6 interleukin-10, and cell adhesion molecules were unaffected by the intervention.


These results demonstrate that on a moderate carbohydrate background diet, accompanied by weight loss, the inclusion of whole eggs improves inflammation to a greater extent than yolk-free egg substitute in those with MetS.

Copyright © 2013 National Lipid Association. Published by Elsevier Inc. All rights reserved.


Body composition; Carbohydrate restriction; Dietary cholesterol; Eggs; Inflammation; Metabolic syndrome

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