What is the Evidence from Epidemiological Studies?
Epidemiological studies, including cohort and case-control studies, have provided substantial evidence on the beneficial effects of polyphenols. For example, a cohort study involving thousands of participants found that higher intake of polyphenol-rich foods was associated with a reduced incidence of Type 2 diabetes. However, it is essential to note that while observational studies can suggest associations, they cannot establish causality.
