Former 'Dr

Former 'Dr. Oz' Weight Loss Guest Says He Shot 2 Attackers Dead. A celeb nutritionist who once appeared on "The Dr. Oz Show" shot and killed his ex-wife and her husband after an apparent ambush. According to law enforcement, who were heavy on the scene ... the alleged attack by Duncan's ex-wife, Cheryl Sanders, and her husband, Robert R. Sanders, may have been planned because the 2 arrived in separate vehicles and one of them had a counterfeit Ohio temporary tag. Cops say Duncan and his wife were confronted by Robert with a gun as they arrived at their home and a shootout ensued ... because Duncan has a concealed carry permit and was also armed. Duncan allegedly fired at Robert in self-defense and hit him, and around the same time ... Cheryl pulled up and pointed a gun at his wife, who was still sitting in the car. Duncan says he then shot and killed his ex.