Association of Dietary Intakes of Total Polyphenol and Its Subclasses with the Risk of Metabolic Syndrome: Tehran Lipid and Glucose Study

Metab Syndr Relat Disord. 2018 Aug;16(6):274-281. doi: 10.1089/met.2017.0140. Epub 2018 May 2.

Abstract

Background: The purpose of the present study was to investigate the longitudinal association of total polyphenol and its main four subclasses intake with metabolic syndrome (MetS) and its components.

Methods: The present prospective study was conducted on 1265 Tehranian adults, aged 19-74 years. Usual dietary intake was evaluated using a validated food-frequency questionnaire. MetS was defined using NCEP ATP III guidelines. Intakes of total polyphenol and its four main subclasses, including flavonoids, phenolic acids, stilbenes, and lignans, were estimated using Phenol-Explorer database.

Results: Median (interquartile range [IQR]) of total polyphenol intake and its subclasses, including flavonoids, phenolic acids, lignans, and stilbenes, was 1422 (967-2137), 69.5 (45.5-99.8), 75.7 (52.2-115), 3.8 (1.9-6.9), and 0.2 (0.1-0.5) mg/day, respectively. After adjustment for confounding factors, participants in the highest tertile of flavonoid intake had 31% lower risk of developing MetS (odds ratio [OR] 0.69; 95% CI 0.48-0.98) and 36% lower risk of hypertriglyceridemia (OR 0.64; 95% CI 0.48-0.99) during 6 years of follow-up. Total polyphenol intake and other subclasses of polyphenol were not associated with MetS and its components.

Conclusion: Higher intake of flavonoids was inversely associated with risk of developing MetS and hypertriglyceridemia in a Tehranian population.

Keywords: flavonoids; metabolic syndrome; polyphenols.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Anthropometry
  • Blood Glucose / analysis
  • Cohort Studies
  • Diet Surveys
  • Diet*
  • Female
  • Humans
  • Hypertriglyceridemia / epidemiology
  • Iran / epidemiology
  • Lipids / blood
  • Longitudinal Studies
  • Male
  • Metabolic Syndrome / epidemiology*
  • Middle Aged
  • Polyphenols / pharmacology*
  • Prospective Studies
  • Young Adult

Substances

  • Blood Glucose
  • Lipids
  • Polyphenols