FDA’s law enforcement arm, the Office of Criminal Investigations, is investigating the outbreak of lung illnesses that have been associated with vaping products, the agency’s tobacco center director Mitch Zeller said Thursday (Sept. 19). Though recent announcements from FDA on the lung illnesses have pinpointed vaping products consisting of tetrahydrocannabinol (THC) and vitamin E acetate as one possible source, Zeller and other public health officials emphasized that no one product, constituent or compound has officially been identified as the root...