A recent study conducted at Fox Chase Cancer Center, Philadelphia indicates that men with early prostate cancer whose PSA (prostate-specific antigen) levels have doubled within 6 months of radiation therapy benefit significantly from a hormonal therapy, if initiated sooner. The findings of the research team suggest that the benefit of immediate use of androgen deprivation therapy (ADT) was more in patients whose PSA doubled within 6 months than in patients whose PSA had longer doubling times.