Voeding rijk aan antioxidanten tegen metaboolsyndroom*
Uit een Iraanse studie onder bijna 2.000 volwassenen blijkt dat voeding rijk aan antioxidanten gunstig is tegen het krijgen van het metaboolsybdroom. De deelnemers met een gemiddelde leeftijd van 40 jaar en een BMI van 27 werden ieder 3 jaar lang gevolgd. Als iemand drie van de volgende vijf risicofactoren heeft, hoge bloeddruk, lage waarden goed cholesterol (HDL), hoge bloedsuikerwaarden, verhoogde triglyceridenwaarden of overgewicht met een ongezonde buikomtrek, dan spreekt men van het metaboolsyndroom. Belangrijke antioxidanten in de voeding zijn: Vitamine C, Vitamine E, Bèta-caroteen, Selenium,
Lycopeen,
Polyfenolen waaronder flavonoïden. Voeding met veel groenten en fruit is rijk aan antioxidanten. De deelnemers aan de studie met de hoogste waarde van antioxidanten in de voeding bleken duidelijk minder gewicht te hebben en wel 38% minder buikvet dan zij met de laagste waarde.
Dietary total antioxidant capacity and the occurrence of metabolic syndrome and its components after a 3-year follow-up in adults: Tehran Lipid and Glucose Study
Zahra Bahadoran, Mahdieh Golzarand, Parvin Mirmiran, Niloofar Shiva and Fereidoun Azizi
Nutrition & Metabolism 2012, 9:70 doi:10.1186/1743-7075-9-70
Abstract (provisional)
Background
There is growing evidence that dietary antioxidants could have favorable effects on the attenuation and prevention of metabolic disorders. In the current study we investigated the association of dietary total antioxidant capacity (TAC) and metabolic syndrome (MetS) components and the occurrence of the MetS during a 3-year follow-up.
Methods
This longitudinal study was conducted in the framework of Tehran Lipid and Glucose Study, between 2006-2008 and 2009-2011, on 1983 adults, aged 19-70 y. The usual intakes of participant were measured using a validated semi-quantitative food frequency questionnaire and dietary TAC was estimated at baseline. The MetS components were assessed at baseline and 3 years later. Multiple logistic regression models were used to estimate the occurrence of the MetS and its components according to dietary TAC quartile categories.
Results
The mean age of participants was 40.4 +/- 13.0 y, and mean BMI was 27.03 +/- 4.9 kg/m2 at baseline. After adjustment for potential confounding variables, TAC was associated with MetS components at baseline. Participant with highest TAC score had lower weight and abdominal fat gain during the 3 year follow-up. The chance of having the MetS, abdominal obesity and hypertension after 3 years decreased across the increasing dietary TAC quartile (P for trend < 0.01). Dietary TAC more than 1080 mumolTE/100 g of food, resulted in a 38 % decrease in the risk of central obesity (OR = 0.62, 95 % CI = 0.38-0.99).
Conclusion
We demonstrated that higher dietary antioxidant intakes have favorable effects on metabolic disorders and, more interestingly, prevent subsequent weight and abdominal fat gain during a 3-year follow-up.
De volledige studie.
(Oktober 2012)
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