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Red wines good, white wines bad?
David P van Velden1, Erna P G Mansvelt, Gordon J Troup
1Department of Primary Medicine and Family Care, Stellenbosch University, Tygerberg, South Africa.
Redox Report : Communications in Free Radical Research
|April 12, 2003
Summary
White wines low in polyphenols reduce blood serum antioxidant action and increase the ratio of harmful to healthy cholesterol. This indicates a negative impact on cardiovascular health from such wines.
Area of Science:
- Cardiovascular Science
- Nutritional Biochemistry
- Wine Chemistry
Background:
- The cardiovascular benefits of wine consumption, particularly red wine, are often attributed to its antioxidant properties.
- White wines also contain various phenolic compounds, but their concentration and impact on cardiovascular health are less understood.
- Polyphenols are key bioactive compounds found in grapes and wine, known for their antioxidant and anti-inflammatory effects.
Purpose of the Study:
- To review the existing literature on the antioxidant effects of white wine on the cardiovascular system.
- To determine the impact of white wine's polyphenol content on blood serum antioxidant capacity and lipoprotein profiles.
- To assess the relationship between white wine ingestion and cardiovascular risk markers.
Main Methods:
- Literature review of studies investigating white wine, polyphenols, and cardiovascular markers.
- Analysis of data concerning blood serum antioxidant action and lipoprotein ratios (LDL/HDL) following white wine consumption.
- Evaluation of studies differentiating white wines based on their polyphenol content.
Main Results:
- Ingestion of white wines with very low or no polyphenol content was associated with a reduction in blood serum antioxidant action.
- Consumption of low-polyphenol white wines led to an increase in the ratio of low-density lipoprotein (LDL) to high-density lipoprotein (HDL).
- The antioxidant capacity of blood serum was diminished when white wines lacked sufficient polyphenolic compounds.
Conclusions:
- White wines lacking adequate polyphenolic compounds do not confer antioxidant benefits to the cardiovascular system.
- The consumption of low-polyphenol white wines may negatively impact cardiovascular health by altering antioxidant status and lipoprotein profiles.
- Focusing on polyphenol content is crucial when evaluating the potential health effects of white wine on the cardiovascular system.
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