...recent studies suggest that secondary metabolites can have a positive effect not only on overall health but also on human life span? Resveratrol, which is most often associated with the consumption of red wine and the so-called French paradox, can be an example of such a chemical. This phenomenon was described by the Irish cardiologist Samuel Black for the first time in 1819. He found that French people were less likely to die of heart failure compared to the Irish, despite their increased intake of saturated fats, which negatively affects the human cardiovascular system. This unexpected finding appealed to several scientific teams, and their study concluded that the antioxidants such as tannins and flavonoids (e.g. resveratrol and quercetin), abundantly found in red wine, play a protective role in this case.