David Pickup of the National Association for Research and Therapy of Homosexuality on Monday blasted California Gov. Jerry Brown for signing a bill that prohibits mental health providers in the state from attempting to change the sexual orientation of minors.

Speaking to CNN, Pickup disclosed that he himself underwent such therapy. He claimed that homosexuality was often the result of a traumatic sexual experience, such as being sexually assaulted by a member of the same sex.

"We do competent therapy, therapy that truly works," Pickup insisted. "And for the governor to sign into law that continues the potential -- unintentionally -- continues the sexual abuse and the heartache of these children who walked into my office who are crying, depressed, lonely, gender-identity confused, and sexually confused, for them to have a bill that says, 'No, we can't even talk about these issues, we can't do anything to help these children resolve their homosexual feelings and maximize their heterosexual potential' -- that's the height of political and therapeutic irresponsibility."

The law completely bans so-called "reparative therapy" for those under 18. For adult patients, the bill mandates a consent form that states “a lesbian, gay, or bisexual sexual orientation is not a mental disorder” and notes the therapy could be harmful.

The American Psychological Association and American Psychiatric Association have both officially stated there is no solid evidence that reparative therapy can change sexual orientation, but said there was evidence it could be harmful.

Pickup said NARTH planned to challenge the new law in court.

Watch video, courtesy of CNN, below: