This news may not make this year's Halloween a happy one for some people.
The Food and Drug Administration (FDA) is warning adults 40 years of age or older to cut back on black licorice.
Eating 2 ounces of the candy a day for at least two weeks may lead to arrhythmia, or irregular heart rhythm, which could possibly land you in the emergency room.
A sweetening compound found in black licorice called glycyrrhizin can cause the body's potassium levels to drop, which may lead to abnormal heartbeat and high blood pressure.
Don't get too worked up though because (A.) we're assuming not many people eat that much black licorice and (B.) the FDA only received one report of this actually affecting a person last year. Not exactly an epidemic.
Still, you've been warned! Ha!