Eating large amounts of black licorice might be harmful to your heart health. The candy can contain a chemical compound called glycyrrhizin, which can cause the body's potassium levels to fall, which can cause abnormal heart rhythms, high blood pressure, swelling, lethargy and congestive heart failure. Dead people are not only voting, but they are still MAKING millions. How much money do you give if someone gives you a winning powerball ticket.