Isaac Johnson cause of death: How did the Chicago MMA fighter die at 31

Chicago’s own Isaac Johnson, a 31-year-old fighter, tragically collapsed during a heavyweight Thai boxing match at the Matador Fighter Challenge. Despite quick medical attention and transport to Loyola University Medical Center, he was pronounced dead shortly after midnight. Authorities have launched an investigation, awaiting an autopsy to determine the cause of his untimely demise. Tributes pour in for the warrior.