Licorice, also know as sweet root, has been used as a sweetener for snacks and a medicinal aid for thousands of years, according to the University of Maryland Medical Center, or UMMC. Credited with being an expectorant and a throat soother, licorice can provide additional health benefits, the UMMC notes. Like any medicinal plant it does have side effects, and becoming aware of the dangers of black licorice will help guide you in your health choices.
Lowered Potassium Levels
One of the dangers of black licorice is the potential for lowering the body's potassium levels, the Linus Pauling Institute warns. Black licorice contains glycyrrhizic acid, which mimics the natural hormone aldosterone. Aldosterone signals the kidney to excrete potassium. The Institute notes that by introducing the mimicking power of black licorice, your body will increase the amount of potassium it pushes out of the body. Potassium is essential for normal bodily function at the cellular level, and it's considered to be one of the most critical nutrients for good health.
High Blood Pressure
One of the more serious dangers of black licorice is high blood pressure. The presence of glycyrrhizin in the licorice and its ability to mimic aldosterone can lead to a condition known as hypoaldosteronism, which can lead to high blood pressure. Nevertheless, not all strains of licorice root contain glycyrrhizin. In addition, the University of Maryland Medical Center notes that hypoaldosteronism only occurs when high doses of the root are consumed. However, individuals with a history of heart- or blood pressure problems will want to be cautious about using black licorice due to the potential negative effects on their cardiovascular health.
Allergic Reaction
Some people are allergic to black licorice. According to eMedTV, the signs of an allergic reaction to black licorice include skin irritations such as rash, itching or hives, swelling of the mouth or throat, and wheezing or other difficulties breathing. This dangerous side effect of black licorice can be reversed if it is caught promptly. However, eMedTV notes that those who are allergic to licorice will want to avoid using it in the future or switch to a licorice product made from deglycyrrhizinated licorice, as this is less likely to cause an allergic response.
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