| Annals.org: Coffee Drinkers - http://www.annals.org/ In a United States population, people who drank more coffee were less likely to develop type 2 diabetes mellitus. |
| Coffee Science Information Centre - http://www.cosic.org/ Answers to questions about the effects of coffee on health, provided by the Institute. |
| Coffee Science Source - http://www.coffeescience.org/ Presents information on coffee, caffeine and health, reviewed by medical experts, from science journals and industry reports. |
| Ill Effects of Caffeine and How to Quit Coffee - http://www.twilightbridge.com/ Information about symptoms of caffeine addiction, calculating daily intake. |