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Is Licorice a Migraine Trigger?

Q. About twelve years ago, I experienced symptoms similar to stroke. I was hospitalized for five days, and several specialists examined me.

The symptoms quickly resolved and have not recurred. They finally diagnosed me as having atypical migraine. I never have headaches, although after that time I have had auras, which look like kaleidoscope lights.

No one ever figured out what triggered the migraine event. Licorice was never a suspect. Now though, I wonder if it could be the culprit.

I recently made a firm commitment to stop eating black licorice because of my hypertension. It’s too early to say for sure, but my frequent excruciating leg cramps seem less common, and so are the auras. Is red licorice as much of a health risk as black?

A. Black licorice can cause high blood pressure, hormonal imbalance and severe headaches. A Swedish gymnastics teacher was written up in The Lancet (Feb. 10, 1979) because her passion for licorice resulted in migraines, loss of libido and severe hypertension. When the licorice was discontinued her symptoms subsided.

Red licorice is safe since it does not contain the ingredient (glycyrrhizin) that causes the problem.

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About the Author
Terry Graedon, PhD, is a medical anthropologist and co-host of The People’s Pharmacy radio show, co-author of The People’s Pharmacy syndicated newspaper columns and numerous books, and co-founder of The People’s Pharmacy website. Terry taught in the Duke University School of Nursing and was an adjunct assistant professor in the Department of Anthropology. She is a Fellow of the Society of Applied Anthropology. Terry is one of the country's leading authorities on the science behind folk remedies..
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