[Warning: Potentially Triggering Content] Details about Robert Carradine's mental health struggles are surfacing following his death. As you know, the 71-year-old actor died by suicide on February 23. His brother, Keith Carradine, revealed the Lizzie McGuire alum secretly battled bipolar disorder for nearly two decades. And although Robert did not publicly discuss his mental health issues, it turns out they actually came to light during his tumultuous divorce with Edie Carradine.