- Discovering the Sweet Mysteries of Chocolate
- Summary of available information about history, cravings, and effects on the nervous system. Links to references.
- International Journal of Medical Sciences: Flavanols in cocoa
- Report on studies providing clinical evidences that flavanol may enhance brain blood flow, improve cognitive health and offer other benefits.
- The Sweet Lure of Chocolate
- Information about cacao, history, production, and health effects. Includes bibliography and links to related material. Provided by the Exporatorium, a science museum in San Francisco.