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Journal of Obesity
Volume 2011 (2011), Article ID 989657, 14 pages
http://dx.doi.org/10.1155/2011/989657
Research Article

Dairy Foods in a Moderate Energy Restricted Diet Do Not Enhance Central Fat, Weight, and Intra-Abdominal Adipose Tissue Losses nor Reduce Adipocyte Size or Inflammatory Markers in Overweight and Obese Adults: A Controlled Feeding Study

1Obesity & Metabolism Research Unit, Western Human Nutrition Research Center, USDA, ARS, 430 West Health Science Drive, Davis, CA 95616, USA
2Department of Nutrition, University of California, Davis, CA 95616, USA
3Pediatric Division, Vanderbilt Children's Hospital, Nashville, TN 37232-9170, USA
4Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50011-1120, USA

Received 6 April 2011; Revised 16 June 2011; Accepted 17 June 2011

Academic Editor: Jordi Salas Salvado

Copyright © 2011 Marta D. Van Loan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Research on dairy foods to enhance weight and fat loss when incorporated into a modest weight loss diet has had mixed results. Objective. A 15-week controlled feeding study to determine if dairy foods enhance central fat and weight loss when incorporated in a modest energy restricted diet of overweight and obese adults. Design. A 3-week run-in to establish energy needs; a 12-week 500 kcal/d energy reduction with 71 low-dairy-consuming overweight and obese adults randomly assigned to diets: ≤1 serving dairy/d (low dairy, LD) or ≤4 servings dairy/d (adequate dairy, AD). All foods were weighed and provided by the metabolic kitchen. Weight, fat, intra-abdominal adipose tissue (IAAT), subcutaneous adipose tissue (SAT) macrophage number, SAT inflammatory gene expression, and circulating cytokines were measured. Results. No diet differences were observed in weight, fat, or IAAT loss; nor SAT mRNA expression of inflammation, circulating cytokines, fasting lipids, glucose, or insulin. There was a significant increase () in serum 25-hydroxyvitamin D in the AD group. Conclusion. Whether increased dairy intake during weight loss results in greater weight and fat loss for individuals with metabolic syndrome deserves investigation. Assessment of appetite, hunger, and satiety with followup on weight regain should be considered.