VENTURA — On Tuesday, August 12, Ventura County Behavioral Health briefed the Board of Supervisors on an emerging public health threat: kratom, an unregulated substance increasingly linked to overdoses and deaths in the county. The update was led by Dr. Tipu Khan of the Ventura County Medical Center’s Addiction Medicine program, Chief Medical Examiner Dr. Christopher Young, Ventura County Behavioral Health’s Substance Use Services Medical Director Dr. Joseph Vlaskovits, and Public Health Officer Dr. Uldine Castel.