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Related Experiment Videos

Wine: does the colour count?

D M Goldberg1, V Garovic-Kocic, E P Diamandis

  • 1Department of Clinical Biochemistry, University of Toronto, Ontario, Canada.

Clinica Chimica Acta; International Journal of Clinical Chemistry
|March 15, 1996
PubMed
Summary
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Red and white wines improved HDL-cholesterol and related proteins, but grape juices did not. Wine

Area of Science:

  • Cardiovascular Health
  • Nutritional Science
  • Biochemistry

Background:

  • Phenolic compounds in beverages like red wine and grape juice are studied for potential health benefits.
  • Understanding the impact of these compounds on lipid profiles is crucial for cardiovascular health research.

Purpose of the Study:

  • To investigate if phenolic constituents in red wine and grape juice influence plasma lipid and lipoprotein levels in healthy men.
  • To differentiate the effects of phenolics from ethanol in wine on lipid metabolism.

Main Methods:

  • A randomized controlled trial involving 24 healthy males.
  • Participants consumed red wine, white wine, or two types of grape juice for 4-week periods.
  • Fasting blood samples were analyzed for lipids and lipoproteins before and after each intervention.

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Main Results:

  • Both red and white wines significantly increased HDL-cholesterol, apo A-I, and apo A-II concentrations.
  • Wines also improved the apo A-I:apo B ratio, while grape juices showed minimal effects.
  • Red wine consumption led to increased triglyceride and total cholesterol levels.

Conclusions:

  • The beneficial effects of wine on plasma lipid and lipoprotein concentrations are primarily attributed to alcohol content.
  • Grape juices, lacking significant alcohol, do not replicate these favorable lipid-modulating effects.
  • Ethanol, rather than phenolics, appears to be the main driver of observed changes in lipid profiles.