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Caffeine In Chocolate Is Controversial

Q. You really blew it in your response to a person concerned about the health effects of chocolate. You said there’s no caffeine in chocolate. My doctor told me to stay away from coffee and chocolate because caffeine could throw my heart out of rhythm.
Last year I developed an abnormal heart rhythm and had to be shocked with electrocardioversion to get back into normal rhythm. I’m avoiding caffeine since I don’t want to go through that again.
A. We may have overstated the case. As we specified, the primary ingredient in chocolate is theobromine, a compound related to caffeine. One chemical analysis (Biochemist, Apr/May 1993) showed no detectable caffeine in chocolate. Other sources list a small amount of caffeine in cocoa and chocolate candy, perhaps because of different analytic techniques.
For comparison, a 5-ounce cup of coffee has 80 to 115 mg of caffeine. A 12-ounce can of cola runs around 40 to 50 mg and so does a cup of tea. A cup of decaf coffee or cocoa has 4 mg and an ounce of milk chocolate is listed as having about 6 mg of caffeine. An ounce of dark chocolate may vary from 5 mg to 25 mg.
For most people, this amount of caffeine is not a problem. For you, however, the consequences of eating chocolate are probably too serious to risk it.

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.”.
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