“Lizzie McGuire” and “Revenge of the Nerds” star Robert Carradine has died at the age of 71, with his family confirming that he took his own life amid a battle with bipolar disorder. “We want people to know it,

Robert Carradine, who appeared in “The Long Riders,” the “Revenge of the Nerds” films and the Disney Channel series “Lizzie McGuire,” has died at 71, his management company confirmed to CNN.

Carradine died after a “valiant” bipolar disorder battle, his family member told Deadline in a statement.