Robert Carradine's Brother Keith, Family Shine Light on How He Died, Mental Illness

Robert Carradine's brother, Keith Carradine, and his family are sharing his struggle with mental illness in the wake of Robert Carradine's death.

According to Keith Carradine, his brother, who was known for starring in Revenge of the Nerds, struggled with bipolar disease. What was Carradine's cause of death? His family is being open about how he died. Carradine "killed himself after years of living with bipolar disorder," The Guardian reported. Robert and Keith are the sons of actor John Carradine. Robert Carradine also starred as Lizzie McGuire’s father, Sam.

“We want people to know it, and there is no shame in it,” Keith Carradine said to Deadline. “It is an illness that got the best of him, and I want to celebrate him for his struggle with it, and celebrate his beautiful soul. He was profoundly gifted, and we will miss him every day. We will take solace in how funny he could be, how wise and utterly accepting and tolerant he was. That’s who my baby brother was.” Keith is Robert's older brother, according to Deadline.

Robert Carradine's Family Described Him as a 'Beautiful Soul'

Robert Carradine's other family members joined in an additional statement. “It is with profound sadness that we must share that our beloved father, grandfather, uncle, and brother Robert Carradine has passed away," it says, according to Deadline.

"In a world that can feel so dark, Bobby was always a beacon on light to everyone around him. We are bereft at the loss of this beautiful soul and want to acknowledge Bobby’s valiant struggle against his nearly two-decade battle with Bipolar Disorder," the family's statement continued.

"We hope his journey can shine a light and encourage addressing the stigma that attaches to mental illness. At this time we ask for the privacy to grieve this unfathomable loss. With gratitude for your understanding and compassion.”

Robert Carradine's Instagram page gave no sign that anything was amiss. His most recent posts focused on his podcast.

Robert Carradine's Half-Brother David Carradine's Death Triggered His Bipolar Disease, Reports Say

According to The Guardian, another family tragedy triggered Robert's mental illness.

His older half-brother David, 72, died in 2009 "from asphyxiation in a hotel room in Thailand," The Guardian reported, adding that Carradine "later said his mental illness was triggered by the death of his brother, and he was eventually diagnosed with bipolar disorder."

According to ABC News, Kung Fu actor David Carradine was found hanging in his htoel room. "The two ropes were tied together," Police Lt. Gen. Worapong Chewprecha told reporters, according to ABC News. "It is unclear whether he committed suicide or not or he died of suffocation or heart failure." However, police told ABC News that they suspected David Carradine may have died of auto-erotic asphyxiation.

Robert Carradine Filed for Divorce From Wife, Edie Carradine, in 2015

Robert Carradine filed for divorce from his wife, Edie Carradine, in 2015. They had been married for 25 years, according to ET.

They had two kids together, and he sought spousal support, the site reported.

According to The Guardian, Robert Carradine had a daughter, Ever Carradine, with Susan Snyder.

He subsequently married Edith Mani; their kids are named Marika and Ian.

The divorce got ugly, with Edith Mani accusing Carradine of trying to "kill them both in a car crash in Colorado in 2015, with Carradine admitting he was in a 'psychotic state' at the time," The Guardian reported.

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