Black licorice might seem like a harmless sweet treat, but new findings from the U.S. Food and Drug Administration (FDA) show that eating too much of it can be dangerous, especially for people over 40 or those at risk for heart disease.
Licorice comes from the root of a small shrub that grows mainly in Greece, Turkey, and parts of Asia. For centuries, it has been used in traditional medicine to treat health problems like heartburn, stomach ulcers, bronchitis, sore throats, coughs, and even some viral infections such as hepatitis.
While licorice has a long history of medicinal use, the risks of eating large amounts of black licorice are not as well known. The FDA study found that too much black licorice can raise blood pressure and cause irregular heart rhythms, also known as arrhythmias. These problems are more likely in people over 40 and those with existing heart issues.
The cause is a compound in black licorice called glycyrrhizin, which gives the candy its sweet flavor. However, glycyrrhizin can lower potassium levels in the body. Potassium is essential for a healthy heart, and when levels drop too low, it can lead to high blood pressure, abnormal heartbeats, swelling, tiredness, and in severe cases, heart failure.
The FDA warns that eating just two ounces of black licorice every day for two weeks can harm heart health. The good news is that potassium levels usually return to normal once you stop eating it — but that doesn’t make the risk any less serious.
Black licorice can also interact with certain medications, herbs, and supplements, making its effects even more dangerous. People taking medicine for heart conditions or other illnesses should be especially careful.
The FDA recommends that healthy adults avoid eating large amounts of black licorice at one time. If you notice symptoms like irregular heartbeats or muscle weakness after eating it, stop immediately and see a doctor.
Black licorice may bring back childhood memories, but it’s best enjoyed in moderation. Knowing how it can affect your health — especially as you get older — can help you make safer choices. If you love black licorice, have it occasionally and in small amounts to keep your heart healthy.
If you care about heart health, please read studies about a surprising link between alcohol drinking and heart health and both blood pressure numbers can predict heart disease risk.
For more information about heart health, please read studies about a new cause of heart rhythm disorders and eating just one cup of nitrate-rich vegetables daily can reduce heart disease risk.
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