Chocolate pill vs. heart disease: 21,000 seniors test daily supplement

NCT ID NCT02422745

First seen Nov 01, 2025 · Last updated May 25, 2026 · Updated 20 times

Summary

This large study tested whether taking daily cocoa extract (from the cocoa bean) and/or a standard multivitamin could lower the risk of heart disease and cancer in older adults. Over 21,000 men and women aged 60+ took the supplements for several years. Researchers tracked heart attacks, strokes, cancer diagnoses, and related deaths to see if these common supplements offered any protection.

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Contacts and locations

Locations

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02215, United States

  • Fred Hutchinson Cancer Research Center

    Seattle, Washington, 98109, United States

Conditions

Explore the condition pages connected to this study.