The Case for Eating More Than Five a Day: Flavanols and the Heart
New research suggests the flavanols in fruit, vegetables, tea and cocoa deliver cardiovascular benefits beyond standard dietary guidance.
"Five a day" may be selling your heart short. Growing evidence indicates that flavanols — natural compounds abundant in berries, apples, grapes, tea and cocoa — provide cardiovascular protection beyond what standard produce guidelines capture.
What flavanols do
Flavanols improve endothelial function, helping arteries relax and regulate blood pressure. Trials link higher intake with modest but consistent reductions in blood pressure and improved cholesterol profiles, and large cohort studies associate flavanol-rich diets with lower rates of heart disease and stroke. The effects are nutrient-specific: two diets can both count as "five a day" while delivering wildly different flavanol doses.
How to eat like the evidence
No supplements required. Berries, apples and pears, green and black tea, and genuinely dark chocolate in moderation are the workhorse sources. Variety matters more than any single superfood, and whole foods beat extracts — flavanols travel with fiber, potassium and other allies.
Researchers caution that flavanols complement rather than replace the fundamentals: not smoking, moving daily, sleeping enough. But as dietary science matures from counting servings to measuring compounds, the humble apple is looking less like folk wisdom and more like pharmacology.
