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Smoking and risk of prostate cancer and prostate cancer death: a pooled study
Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria.
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för medicin. Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.ORCID-id: 0000-0001-6808-4405
Umeå universitet, Medicinska fakulteten, Institutionen för folkhälsa och klinisk medicin, Avdelningen för hållbar hälsa.
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2023 (Engelska)Ingår i: European Urology, ISSN 0302-2838, E-ISSN 1873-7560, Vol. 83, nr 5, s. 422-431Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Background: Prospective and detailed investigations of smoking and prostate cancer (PCa) risk and death are lacking.

Objective: To investigate prediagnosis smoking habit (status, intensity, duration, and cessation) as a risk factor, on its own and combined with body mass index (BMI), for PCa incidence and death.

Design, setting, and participants: We included 351 448 men with smoking information from five Swedish cohorts. Outcome measurements and statistical analysis: We used Cox regression to calculate hazard ratios (HRs) and confidence intervals (CIs) for PCa incidence (n = 24 731) and death (n = 4322).

Results and limitations: Smoking was associated with a lower risk of any PCa (HR 0.89, 95% CI 0.86–0.92), which was most pronounced for low-risk PCa (HR 0.74, 95% CI 0.69–0.79) and was restricted to PCa cases diagnosed in the prostate-specific antigen (PSA) era. Smoking was associated with a higher risk of PCa death in the full cohort (HR 1.10, 95% CI 1.02–1.18) and in case-only analysis adjusted for clinical characteristics (HR 1.20, 95% CI 1.11–1.31), which was a consistent finding across case groups (p = 0.8 for heterogeneity). Associations by smoking intensity and, to lesser degree, smoking duration and cessation, supported the associations for smoking status. Smoking in combination with obesity (BMI ≥30 kg/m2) further decreased the risk of low-risk PCa incidence (HR 0.40, 95% CI 0.30–0.53 compared to never smokers with BMI <25 kg/m2) and further increased the risk of PCa death (HR 1.49, 95% CI 1.21–1.84). A limitation of the study is that only a subgroup of men had information on smoking habit around the time of their PCa diagnosis.

Conclusions: The lower PCa risk for smokers in the PSA era, particularly for low-risk PCa, can probably be attributed to low uptake of PSA testing by smokers. Poor survival for smokers, particularly obese smokers, requires further study to clarify the underlying causes and the preventive potential of smoking intervention for PCa death.

Patient summary: Smokers have a higher risk of dying from prostate cancer, which further increases with obesity.

Ort, förlag, år, upplaga, sidor
Elsevier, 2023. Vol. 83, nr 5, s. 422-431
Nyckelord [en]
Prospective study, Prostate cancer, Smoking
Nationell ämneskategori
Urologi och njurmedicin Cancer och onkologi
Identifikatorer
URN: urn:nbn:se:umu:diva-194908DOI: 10.1016/j.eururo.2022.03.033ISI: 000983056500001PubMedID: 35523620Scopus ID: 2-s2.0-85129543842OAI: oai:DiVA.org:umu-194908DiVA, id: diva2:1663046
Tillgänglig från: 2022-06-01 Skapad: 2022-06-01 Senast uppdaterad: 2023-07-14Bibliografiskt granskad

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Häggström, ChristelJärvholm, Bengt

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