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Loss of a parent and the risk of cancer in early life: a nationwide cohort study
Örebro universitet, Institutionen för hälsovetenskap och medicin. Clinical Epidemiology and Biostatistics Unit, Örebro University Hospital, Örebro, Sweden.ORCID-id: 0000-0002-0066-4814
Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavík, Iceland.
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Vise andre og tillknytning
2014 (engelsk)Inngår i: Cancer Causes and Control, ISSN 0957-5243, E-ISSN 1573-7225, Vol. 25, nr 4, s. 499-506Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background: While early-life exposure to stress has been associated with subsequent psychiatric and cardiovascular morbidity, little is known regarding its potential role in cancer development. We hypothesized that severe emotional stress, such as the loss of a parent through death during childhood, may increase the risk of cancer in early life.

Method: Based on the Swedish Multi-Generation Register, we identified a cohort of 4,219,691 individuals who had both parents identifiable in the same register and followed the cohort from birth to the age of 40 years between 1961 and 2006. Through information retrieved from the Swedish Causes of Death and Cancer Registers, we ascertained death among the parents and cancer diagnosis among the cohort individuals. We used Poisson regression to calculate the relative risks (RRs) and 95 % confidence intervals (CIs).

Results: Parental death was not associated with total cancer risk. However, parental death during childhood was associated with a higher risk of human papillomavirus (HPV) infection-related cancers (RR 1.4; 95 % CI 1.2-1.7), and loss during early adulthood (>18 years) entailed a higher risk of cancers of the stomach (RR 1.8; 95 % CI 1.3-2.6), lung (RR 1.7; 95 % CI 1.1-2.4), rectum (RR 1.4; 95 % CI 1.0-2.0), and breast (RR 1.1; 95 % CI 1.0-1.3). A significant association was observed for pancreatic cancer for both loss during childhood (RR 2.6; 95 % CI 1.6-4.2) and afterward (RR 2.8; 95 % CI 1.9-4.3).

Conclusion: Our results suggest that severe psychological stress in early life may be associated with premature development of certain malignancies, particularly cancers related to smoking and HPV infection.

sted, utgiver, år, opplag, sider
Dordrecht, Netherlands: Springer, 2014. Vol. 25, nr 4, s. 499-506
Emneord [en]
Sweden/epidemiology, Cohort studies, Psychological stress, Neoplasms/epidemiology/etiology, HPV/infection, Risk
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-41410DOI: 10.1007/s10552-014-0352-zISI: 000332647500010PubMedID: 24500176Scopus ID: 2-s2.0-84896096677OAI: oai:DiVA.org:oru-41410DiVA, id: diva2:811709
Forskningsfinansiär
Swedish Research Council, K2009-70X-21087-01-2 SIMSAM 80748301
Merknad

Funding Agencies:

Alex och Eva Wallströms stiftelse

Research Committee in Örebro County Hospital

Svenska Sällskapet for Medicinsk Forskning (SSMF)

Tilgjengelig fra: 2015-05-12 Laget: 2015-01-14 Sist oppdatert: 2018-09-06bibliografisk kontrollert
Inngår i avhandling
1. Childhood bereavement, stress resilience, and cancer risk: an integrated register-based approach
Åpne denne publikasjonen i ny fane eller vindu >>Childhood bereavement, stress resilience, and cancer risk: an integrated register-based approach
2018 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Accumulating evidence suggests that psychosocial stress and susceptibility to stressful exposures – stress resilience – influence the risk of various health outcomes, but the potential link with cancer occurrence is unclear. The aims of this thesis were to test if loss of a close relative, a marker of severe psychological stress, and stress resilience measured during late adolescence are associated with cancer risk later in life, as well as to explore potential underlying mechanisms. National registers provided information on childhood bereavement, defined as death of a first-degree relative, as well as a measure of psychological functioning relevant to stress resilience that was obtained from mandatory military enlistment assessments. In a cohort comprising all individuals born in Sweden during 1961-2002, we found that bereavement during childhood (up to age 18 years) was associated with increased risks of HPVrelated malignancies and pancreatic cancer. Parental loss during early adulthood (ages 18-40 years) also entails a raised risk of pancreatic cancer as well as for gastric and lung cancer. In a cohort of men born during 1973-1983, we observed that childhood bereavement is also associated with low stress resilience during late adolescence. In our third cohort study, comprising men born during 1952-1956, we found that low stress resilience compared with high, was associated with 5-fold and 3-fold increased risks of subsequent liver and lung cancer, respectively. In contrast, low stress resilience is associated with reduced risks for prostate cancer and malignant melanoma. Finally, in a cohort of twin conscripts born during 1959-1985 who completed a survey in 2005- 2006 covering use of addictive substances, we found that low stress resilience was also associated with a raised occurrence of hazardous use of alcohol, alcohol dependence, cigarette smoking and nicotine dependence, as well as with other drug use. We conclude that the observed links with cancer risk for stressful exposures and low stress resilience, may be explained, at least in part, by disadvantageous health behavior.

sted, utgiver, år, opplag, sider
Örebro: Örebro University, 2018. s. 85
Serie
Örebro Studies in Medicine, ISSN 1652-4063 ; 171
Emneord
alcohol, bereavement, cancer, drug use, epidemiology, health behaviour, psychological resilience, smoking, stress
HSV kategori
Identifikatorer
urn:nbn:se:oru:diva-62605 (URN)978-91-7529-224-3 (ISBN)
Disputas
2018-02-09, Campus USÖ, hörsal C1, Södra Grev Rosengatan 32, Örebro, 13:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2017-11-16 Laget: 2017-11-16 Sist oppdatert: 2018-01-19bibliografisk kontrollert

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