That may well be a fact but the probability of dying from rectal explosion before your heart gives out is almost certain.Eating just 57 grams(2 oz) of black licorice, which is about three 2.5-centimeter (1 in) pieces, every day for two weeks can cause heart problems. Black licorice contains glycyrrhizin, a compound that causes potassium levels to decrease. When potassium levels fall, people are at risk of suffering from abnormal heart rhythms, high blood pressure, and even congestive heart failure.