The use of complementary and alternative medicine after the completion of hospital treatment for colorectal cancer: findings from a questionnaire study in Denmark

Little is known about the use of complementary and alternative medicine (CAM) for colorectal cancer, despite the high incidence of colorectal cancer and the frequency of CAM use for cancer-related symptoms. This is the first Danish study to examine the use of CAM by individuals who completed hospital treatment for colorectal cancer.

In 2011–12, a pragmatic trial on energy healing as rehabilitation after colorectal cancer was conducted in Denmark with participants who had completed cancer-related hospital treatment within the past 18 months prior to study inclusion. As part of the trial, participants (n = 247) completed a questionnaire on the use, motivations, pathways and perceived benefits of CAM. Socio-demographic information was obtained via the Danish National Patient Registry and self-report. Descriptive statistics were generated, using SPSS, version 18, and logistic regression analysis was carried out.

Of 247 individuals, 49.4% used some form of CAM in the past month. Nearly half of the CAM users (49.2%) used natural medicines and/or dietary supplements only; 32% consulted an alternative therapist; 18.9% used both. Those who consulted alternative therapists were most commonly women (OR: 3.36; p = .002; CI: 1.54-7.33) with high educational levels (OR: 2.77; p = 0.010; CI: 1.28-6.01); more women than men used natural medicines and/or dietary supplements (OR: 1.83; p = .047; CI: 1.01-3.30) independent of educational levels. A majority commenced CAM on their own initiative; CAM was predominantly used to achieve better physical wellbeing. Beneficial effects were reported particularly in relation to physical health; few harmful effects were reported. Of those using CAM, 51.5% did not disclose its use to their physician; 8.5% of participants reported to have been asked by their physician about CAM use.

The use of CAM following completion of hospital treatment for colorectal cancer seems widespread in Denmark. The identified extensive CAM use suggests a need for more reliable and diverse information about CAM for both patients and biomedical providers, and improved communication about its use in the clinical context.