Peterson Toscano, a devout Christian, spent seventeen years in the ex-gay movement attempting to alter his sexual orientation through conversion therapy. In addition to receiving pastoral counseling and discipleship training, he attended several ex-gay programs including Life Ministries in New York City and the residential ex-gay program Love in Action in Memphis, Tennessee. The conflict between his beliefs and his sexuality lead him to consider suicide. He has stated that his experiences in Love in Action "felt like... a biblically induced coma". He graduated successfully from the program nearly two years later, but in January of 1999 he finally came out and fully accepted himself as a gay man.

In 2003, he premiered his one-man satire Doin' Time in the Homo No Mo Halfway House and has since performed it throughout the US, Canada and Europe. His other works include Queer 101, How the Indians Discovered Columbus, Footprints - An Inspirational Comedy, The Re-Education of George W. Bush, and Transfigurations - Transgressing Gender in the Bible. He also appears in the documentary film Fish Can't Fly, which explores the conflict that many lesbians and gays have had with their Christian faith.

As someone who lived nearly 20 years as evangelical Christian, Peterson connects regularly with evangelical and conservative Christian around lesbian, gay, bisexual and transgender concerns. Now a member of the Religious Society of Friends (Quaker), he travels in the ministry with a travel minute that expresses the goals and mission behind his work. Toscano states that his non-violent approach in his work seeks to expose injustice without attacking anti-gay activists. He believes that gay community poorly welcomes gay Christians, and that that helps drive the popularity of conversion therapy groups.

In April 2007, together with Christine Bakke, Toscano launched Beyond Ex-Gay, an on-line support group for people who are now Ex-ex-gay. Together with SoulForce and The University of California at Irvine, bXg hosted the Ex-Gay Survivor Conference - Undoing the Damage, Affirming Our Lives Together.Toscano also helps organize the Ex-Gay Survivor Conference held June 28-July 1, 2007 in Irvine, CA. He is also an active contributor to the Gay Christian Network.

He currently resides in Hartford, Connecticut.