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Ann Nutr Metab. 2011;59(2-4):176-86. doi: 10.1159/000334071. Epub 2011 Dec 2.

Effects of monounsaturated fatty acids on cardiovascular risk factors: a systematic review and meta-analysis.

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1
University for Health Sciences, Medical Informatics and Technology, Institute for Nutritional Sciences and Physiology, Hall in Tirol, Austria. lukas.schwingshackl@umit.at

Abstract

The appropriate pattern of macronutrient distribution for dietary protocols aimed at treating or preventing obesity and its associated cardiovascular diseases is still a controversial topic of discussion. Recommendations considering a specific percentage or range for monounsaturated fatty acids (MUFA) are rare. It was the aim of this study to analyze long-term, randomized, controlled dietary intervention trials and to investigate the effects of MUFA on the biomarkers of obesity and cardiovascular risk factors. Dietary regimens with a high amount of MUFA (>12%) were compared to those with ≤12%. The biomarkers taken into account were weight, waist circumference, fat mass, total cholesterol, LDL cholesterol, HDL cholesterol, triacylglycerols, systolic and diastolic blood pressure, as well as C-reactive protein. A total of 12 studies met the inclusion criteria. Data analysis was performed using the Review Manager 5.0.25 software. Significant differences between high- and low-MUFA protocols could be observed with respect to fat mass [-1.94 kg (confidence interval -3.72, -0.17), p = 0.03], systolic blood pressure [-2.26 mm Hg (confidence interval -4.28, -0.25), p = 0.03] and diastolic blood pressure [-1.15 mm Hg (confidence interval -1.96, -0.34), p = 0.005] favoring the dietary protocols with >12% MUFA. Therefore, MUFA might represent a useful tool in the design of dietary regimens for obesity and cardiovascular disease.

PMID:
22142965
DOI:
10.1159/000334071
[Indexed for MEDLINE]
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