David Peter Reimer (August 22, 1965 – May 5, 2004) was a Canadian man who was born biologically male. However, he was sexually reassigned and raised as female after his penis was accidentally destroyed during circumcision. Psychologist John Money oversaw the case and reported the reassignment as successful and as evidence that gender identity is primarily learned. Academic sexologist Milton Diamond later reported that Reimer failed to identify as female since the age of 9 to 11, making the transition to living as a male at age 15. Reimer later went public with his story to discourage similar medical practices. He later committed suicide, owing to suffering years of severe depression, financial instability, and a troubled marriage.