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Jpn J Clin Oncol. 2008 Aug;38(8):553-61. doi: 10.1093/jjco/hyn067. Epub 2008 Jul 30.

Personality and colorectal cancer: the Fukuoka colorectal cancer study.

Author information

1
Institute of Health Science, Kyushu University, Kasuga, Fukuoka 816-8580, Japan. nagano@ihs.kyushu-u.ac.jp

Abstract

OBJECTIVE:

Although personality factors, especially emotional suppression and loss-hopelessness, have been linked to the occurrence and progression of cancer, little is reported specifically on colorectal cancer. It has also been claimed that a 'hysterical' personality characterized by exaggerated emotional expressions, egocentricity and ambivalent connection may be protective from cancer. This community-based case-control study examined whether personality factors relevant to emotional suppression or loss-hopelessness are associated with an increased risk of colorectal cancer, and whether factors related to the hysterical personality are associated with a decreased risk.

METHODS:

The stress inventory (SI), a self-administered questionnaire to assess the possible disease-prone and other relevant personalities in Japanese, was completed by 497 patients with newly diagnosed colorectal cancer and 809 controls randomly selected in the Fukuoka area of Japan.

RESULTS:

After controlling for age, sex and residence using a logistic regression model, none of the SI scales relevant to emotional suppression ('unfulfilled needs for acceptance', 'altruism', 'rationalizing conflicts/frustrations') or loss-hopelessness ('low sense of control', 'object-dependence/loss', 'object-dependence/happiness') was related to colorectal cancer. On the other hand, two scales representing elements of the hysterical personality, 'object-dependence/ambivalence' and 'egoism' were protectively associated with risk. Additional adjustment for body-mass index and lifestyle factors did not materially change these associations.

CONCLUSIONS:

Although personalities relevant to the emotional suppression or loss-hopelessness may not be a risk factor for colorectal cancer in the Japanese population, ambivalent connection and egocentricity may be protective.

PMID:
18669515
DOI:
10.1093/jjco/hyn067
[Indexed for MEDLINE]

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