What Does Too Much Black Licorice Do to Your Blood?
                                
                                
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                                    4 min read                                
                            
                                According to the FDA, eating just two ounces of black licorice daily for at least two weeks could lead to an irregular heart rhythm in people over 40. This happens because the natural sweetener in licorice, glycyrrhizin, can have a surprising and dangerous effect on your blood and overall health.