Setting the Record Straight on Caffeine and Health

International Food Information Council

Food Insight
July/August 2006

For thousands of years people have enjoyed foods and beverages containing caffeine. Despite its proven safety, common myths about the health effects of caffeine are persistent. Misunderstanding is sometimes passed along by friends, family, the news media, and even healthcare professionals, leaving many people confused and wary about caffeine consumption. Extensive scientific research regarding the potential health effects of caffeine has been conducted. The overwhelming scientific evidence on caffeine demonstrates that moderate daily caffeine consumption (about 300 milligrams per day) is safe. And, as with almost everything in the human diet, moderation is key.

Test Your Caffeine Knowledge

Myth: Caffeine causes dehydration.

Fact: Caffeine-containing beverages contribute to an individual’s daily total water intake. Although caffeine is a mild diuretic, the urinary output effects attributed to caffeine have been exaggerated. In fact, urinary output is usually offset by the liquid consumed. Research now shows that coffee, tea, and other caffeine-containing beverages do not negatively affect indicators of hydration in those who are accustomed to consuming caffeine.

Myth: Caffeine is addictive.

Fact: Moderate caffeine consumption is safe and caffeine should not be classified with addictive substances. People who say they are “addicted” to caffeine tend to use the term loosely, like saying they are “addicted” to running, work, or television as an important or enjoyable part of their routine. Some caffeine-sensitive individuals may experience mild, temporary effects, including headache, restlessness, and irritability, when their daily intake is quickly and substantially altered. Medical experts agree that any discomfort caused by the abrupt cessation of caffeine consumption can be avoided by progressively decreasing intake over a few days.

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