The association between sexual function and prostate cancer risk in US veterans.

Journal Article

Sexual dysfunction and prostate cancer are common among older men. Few studies explored the association between these two illnesses. We examined whether sexual function is associated with prostate cancer risk among older men. Among 448 men undergoing prostate biopsy at the Durham Veterans Affairs Hospital, sexual function was ascertained from the Expanded Prostate Cancer Index Composite sexual assessment. We tested the link between sexual function and prostate cancer risk adjusting for multiple demographic and clinical characteristics using logistic regression. Multinomial logistic regression was used to test the associations with risk of low-grade (Gleason ≤6) and high-grade (Gleason ≥7 or ≥4 + 3) disease versus no cancer. Of 448 men, 209 (47%) had a positive biopsy; these men were less likely to be white (43% vs 55%, P = 0.013), had higher prostate-specific antigen (PSA) (6.0 vs 5.4 ng ml-1 , P < 0.001), but with lower mean sexual function score (47 vs 54, P = 0.007). There was no difference in age, BMI, pack years smoked, history of heart disease and/or diabetes. After adjusting for baseline differences, sexual function was linked with a decreased risk of overall prostate cancer risk (OR: 0.91 per 10-point change in sexual function, P = 0.004) and high-grade disease whether defined as Gleason ≥7 (OR: 0.86, P = 0.001) or ≥4 + 3 (OR: 0.85, P = 0.009). Sexual function was unrelated to low-grade prostate cancer (OR: 0.94, P = 0.13). Thus, among men undergoing prostate biopsy, higher sexual function was associated with a decreased risk of overall and high-grade prostate cancer. Confirmatory studies are needed.

Full Text

Duke Authors

Cited Authors

  • Zapata, DF; Howard, LE; Frank, J; Simon, RM; Hoyo, C; Grant, DJ; Freedland, SJ; Vidal, AC

Published Date

  • March 2017

Published In

Volume / Issue

  • 19 / 2

Start / End Page

  • 191 - 195

PubMed ID

  • 27586025

Pubmed Central ID

  • 27586025

Electronic International Standard Serial Number (EISSN)

  • 1745-7262

International Standard Serial Number (ISSN)

  • 1008-682X

Digital Object Identifier (DOI)

  • 10.4103/1008-682x.184869

Language

  • eng