Background: There is evidence linking diet to the risk of developing cancer and preventing recurrence, but the therapeutic value of food in treating cancer remains unclear. Therefore, guidelines for well-nourished patients with cancer are based on general healthy eating recommendations. This study aims to describe patients' knowledge, attitudes, and beliefs towards the role of diet and cancer.
Methods: A cross-sectional survey was undertaken between July 2016 and January 2017. Patients being reviewed by Medical Oncology at a tertiary cancer service were invited to complete a questionnaire.
Results: One hundred and nine patients participated, with 61% receiving curative treatment. Median body mass index was 26.9 kg/m2 . A high frequency reported weight change (72%) and dietary modifications (reduction in overall intake; 62%). Patients were more likely to modify their diet if they had experienced weight change [odds ratio (OR): 3.59, 95% confidence interval (CI): 1.49-8.63], had malignancy-related anorexia (OR: 2.38, 95% CI: 1.06-5.32), strongly believed that diet contributed to their cancer (OR: 9.09, 95% CI: 2.55-32.44) or felt that nutrition played an important role in treatment (OR: 4.50, 95% CI: 1.95-10.40). Dietary information was largely sought from their hospital dietitian (51%), the Internet (39%), or treating oncologist (35%), of whom 47% and 57% found the information from their hospital dietitian and oncologist helpful, respectively.
Conclusions: Our survey confirms patients place great importance on diet as part of their cancer management. Evidence-based dietetic services currently focus on managing malnutrition during treatment, but this study has identified hospital clinicians are not necessarily providing dietary information to meet patient expectations and thus a potential gap in patient-centred nutrition services for this patient population.
Keywords: attitudes and beliefs; cancer; dietary information; nutrition; weight.
© 2022 The British Dietetic Association Ltd.