The researchers suggested that one of the reasons why non alcoholic red wine was better than alcoholic red wine was due to the fact that alcohol in red wine could reduce the effectiveness of powerful antioxidants called polyphenols, which are the reason for the health benefits associated with red wine.
"The non-alcoholic part of the wine, namely polyphenols, exerts a protective effect on the cardiovascular system. Polyphenols also have anti-inflammatory and antioxidant properties that may be useful to prevent other disease such as diabetes", lead researcher Ramon Estruch said.
Source: Medindia