Hershey Co has been sued by a consumer who accused the company of selling dark chocolate that contains harmful levels of lead and cadmium. In a proposed class action filed on Wednesday, Christopher Lazazzaro said he would not have bought or would have paid less for Hershey's Special Dark Mildly Sweet Chocolate, Lily's Extra Dark Chocolate 70% Cocoa and Lily's Extreme Dark Chocolate 85% Cocoa had Hershey disclosed their metals content. Hershey did not immediately respond on Thursday to requests for comment on the lawsuit, which was filed in the federal court in Central Islip, New York.