Grape juice or wine: which is the best option?

Area of Science:

• Nutritional Science
• Cardiovascular Health
• Food Science

Background:

• Grapes (Vitis vinifera, Vitis labrusca) are rich in polyphenols, linked to reduced inflammation, oxidative stress, and cardiovascular protection.
• Industrial processing of wine and juice may alter their antioxidant content and health impacts.

Purpose of the Study:

• To compare the effects of red wine versus grape juice consumption on cardiovascular risk factors.
• To review existing literature on the health benefits of these grape products.

Main Methods:

• Systematic literature search using PRISMA guidelines.
• Databases searched include Medline/PubMed and EMBASE.
• Focus on studies examining human consumption of wine and grape juice.

Main Results:

• Both red wine and grape juice consumption were associated with reductions in body mass index, waist circumference, glycemia, and lipid peroxidation.
• Significant reductions were observed in total cholesterol, LDL-c, triglycerides, blood pressure, and homocysteine levels.
• Bioactive compounds in both beverages contribute to observed health benefits.

Conclusions:

• Red wine and grape juice consumption show promise for improving cardiovascular risk factors.
• Further high-quality, double-blind, randomized controlled trials are necessary for direct comparison, controlling for variables like population, age, dosage, and product type.