Lorentzen was born in 1976 and grew up outside Boston. He graduated from Harvard in 1999 with a degree in Classics. In 2000 he moved to New York, where he became a journeyman of the magazine business, with stints at Us Weekly, the New Leader, and Harper’s Magazine. He has maintained a loose association with n+1 since its founding in 2004. His writing has appeared in Rolling Stone, Movieline, the Hartford Courant, the New York Journal-News, the RBS Gazette, the New York Sun, BlackBook, TimeOut New York, Tar, and the National.