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The protein type within a hypocaloric diet affects obesity-related inflammation: the RESMENA project

Lopez-Legarrea, Patricia; de la Iglesia, Rocio; Abete, Itziar; Navas-Carretero, Santiago; Martinez, J. Alfredo; Zulet, M. Angeles

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PMID: 24607301


OBJECTIVES: The aim of this study was to compare the effect of two energy-restricted, differing with regard to protein content, on the inflammation state of obese individuals with features of metabolic syndrome. METHODS: Ninety-six participants completed an 8-wk randomized intervention trial that compared the RESMENA diet (-30% energy, with 30% energy from protein) with a control diet (-30% energy, with 15% energy from protein) that was based on American Heart Association criteria. RESULTS: The mean body weight losses were 7.09 ± 0.82 kg and 6.73 ± 0.71 kg, respectively, with no differences seen between the groups. The endpoint inflammation score-which was based on high-sensitivity C-reactive protein, interleukin-6, tumor necrosis factor-α, and plasminogen activator inhibitor-1 levels-was significantly lower (P = 0.012) in the low-protein group (6.81 ± 2.32 versus 7.94 ± 1.94). The linear regression analyses revealed that total protein intake was positively associated with inflammation (P = 0.007) as well as with animal protein (P = 0.025) and meat protein (P = 0.015), but neither vegetable- nor fish-derived proteins were found to influence inflammatory status. CONCLUSIONS: Our results suggest that the type of protein consumed (more than the total protein consumed) within an energy-restricted diet influences the inflammation status associated with obesity-related comorbidities.

Automatic Tags

Female; Humans; Male; Adult; Inflammation; Obesity; Caloric Restriction; Middle Aged; Biomarkers; Diet, Reducing; C-Reactive Protein; Dietary Proteins; Meat; Plant Proteins, Dietary; Interleukin-6; Tumor Necrosis Factor-alpha; Plasminogen Activator Inhibitor 1; Inflammation markers; Macronutrient distribution; Fish Proteins

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