Apparently Cook saw the six-episode series himself before telling Interscope Cofounder and current Apple exec Jimmy Iovine that the show featured too much violent content. In addition to gun violence, the show also includes scenes with cocaine use and at least one orgy. Neither Dre nor Cook have spoken about the show's apparent rejection.
Vital Signs was originally announced back in the winter of 2016 and it's been revealed that Michael K. Williams, Sam Rockwell and Ian McShane were stars on the show. At the time, it was reported that each episode of the series was supposed to be "focusing on a different emotion and how Dre's character deals with it."
We may not be getting to see Vital Signs, but at least more of Dre's handy work will make its way into the world soon.