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Correlation between pubic hair grooming and STIs: results from a nationally representative probability sample
  1. E Charles Osterberg1,2,
  2. Thomas W Gaither1,
  3. Mohannad A Awad1,
  4. Matthew D Truesdale1,
  5. Isabel Allen3,
  6. Siobhan Sutcliffe4,
  7. Benjamin N Breyer1,3
  1. 1Department of Urology, University of California—San Francisco, San Francisco, California, USA
  2. 2Department of Surgery, University of Texas—Dell Medical School, Austin, Texas, USA
  3. 3Department of Biostatistics and Epidemiology, University of California—San Francisco, San Francisco, California, USA
  4. 4Division of Public Health Sciences, Department of Surgery, Washington University—St. Louis, Missouri, USA
  1. Correspondence to Dr Benjamin N Breyer, UCSF Department of Urology, Chief of Urology, San Francisco General Hospital, 1001 Potrero Ave, Suite 3a20, San Francisco, CA 94110, USA; Benjamin.breyer{at}ucsf.edu

Abstract

Objective STIs are the most common infections among adults. Concurrently, pubic hair grooming is prevalent. Small-scale studies have demonstrated a relationship between pubic hair grooming and STIs. We aim to examine this relationship in a large sample of men and women.

Design We conducted a probability survey of US residents aged 18–65 years. The survey ascertained self-reported pubic hair grooming practices, sexual behaviours and STI history. We defined extreme grooming as removal of all pubic hair more than 11 times per year and high-frequency grooming as daily/weekly trimming. Cutaneous STIs included herpes, human papillomavirus, syphilis and molluscum. Secretory STIs included gonorrhoea, chlamydia and HIV. We analysed lice separately.

Results Of 7580 respondents who completed the survey, 74% reported grooming their pubic hair, 66% of men and 84% of women. After adjusting for age and lifetime sexual partners, ever having groomed was positively associated with a history of self-reported STIs (OR 1.8; 95% CI 1.4 to 2.2), including cutaneous STIs (OR 2.6; CI 1.8 to 3.7), secretory STIs (OR 1.7; CI 1.3 to 2.2) and lice (OR 1.9; CI 1.3 to 2.9). These positive associations were stronger for extreme groomers (OR 4.4; CI 2.9 to 6.8) and high-frequency groomers (OR 3.5; CI 2.3 to 5.4) with cutaneous STIs, and for non-extreme groomers (OR 2.0; CI 1.3 to 3.0) and low-frequency groomers (OR 2.0; CI 1.3 to 3.1) with lice.

Conclusions Among a representative sample of US residents, pubic hair grooming was positively related to self-reported STI history. Further research is warranted to gain insight into STI risk-reduction strategies.

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Footnotes

  • Handling editor Jackie A Cassell

  • Contributors ECO, TWG and MAA drafted the manuscript. ECO, TWG, MAA, IA and SS analysed and interpreted the data. MDT acquired the data. MDT and BNB designed and conceived the study. SS and BNB critically revised the manuscript.

  • Funding This work was supported by the National Institute of Health: K12KD08320 and the Alafi Family Foundation.

  • Competing interests None declared.

  • Ethics approval University of California—San Francisco, San Francisco, CA, USA. IRB number 13-11519.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement All data were collected by the GfK group (GfK, formerly Knowledge Networks) and are maintained by this group.

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