A large-scale international study published in Food and Function on June 16, 2026, reveals that cardiovascular health depends significantly on the specific types of fruits and vegetables consumed, rather than just the total quantity. Researchers from the University of Reading, Harvard Medical School, and other institutions found that most individuals fail to consume sufficient flavanols, which are essential plant compounds linked to reduced heart disease mortality. The authors emphasize that even individuals meeting general dietary guidelines often fall short of the 500 mg daily flavanol intake threshold identified by the COSMOS study as necessary for meaningful heart protection. The research highlights a critical gap between current public health advice and the specific nutritional requirements needed to optimize cardiovascular outcomes. By analyzing biomarker data from over 30,000 participants in the UK and US, the study demonstrates that fewer than one in five people achieve optimal flavanol levels. The findings suggest that dietary guidance should evolve from a simple focus on volume to a more nuanced approach that prioritizes high-flavanol food sources. To improve heart health, individuals are encouraged to incorporate specific high-flavanol foods into their daily meals, such as blackberries, plums, apples with skin, and green tea. This shift toward targeted nutritional choices offers a practical, evidence-based strategy for reducing the risk of cardiovascular disease.
