Reems, who was born Herbert Streicher, died Tuesday afternoon at the veterans' hospital in Salt Lake City. Reems' wife confirmed his death Wednesday.
The cause of death hasn't been determined, but Reems was suffering from multiple medical issues, including pancreatic cancer.
Reems played the male lead in "Deep Throat," a pop culture phenomenon that brought pornography to mainstream audiences.
Reems left the porn industry and moved to Park City, Utah, in the 1980s, where he underwent an alcohol treatment program and worked as a real estate agent.