Wine, Polyphenols, and Mediterranean Diets. What Else Is There to Say?
Level 5 - mechanism / opinion, no new human data
Narrative review with no systematic search methodology or new human data
PubMed 34577008 · doi:10.3390/molecules26185537
What was done
This narrative review examined the literature on the cardiovascular and biological effects of wine polyphenols compared to the health harms of alcohol consumption. It also evaluated alternative, non-alcoholic dietary sources of polyphenols within the Mediterranean dietary pattern, such as virgin olive oil, fruits, grains, and vegetables.
What was found
The abstract reports no quantitative risk estimates or statistical comparisons. It notes that alcohol is an IARC Group 1 carcinogen causally linked to liver cirrhosis as well as cancers of the upper digestive tract, liver, colorectum, and female breast, even at low levels of intake. It notes that no consensus exists supporting the health promotion of moderate wine drinking, particularly when non-alcoholic components of the Mediterranean diet provide equivalent phytochemicals without alcohol-related toxicities.
Why it matters
It challenges recommendations that promote moderate red wine intake for cardiovascular protection, emphasizing that polyphenol benefits can be achieved through dietary sources that carry no carcinogenic or hepatotoxic risk.
Limits
This is a narrative review without systematic search protocols, meta-analytic pooling, or new empirical data. The abstract provides no quantitative thresholds or relative risk comparisons between wine intake, non-alcoholic polyphenol sources, and specific clinical endpoints.
Cited by
- supports Alcohol consumption increases the risk of breast cancer and is classified as a Group 1 carcinogen.