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Increasing Fruit and Vegetable Intake Among Adults Attending Colorectal Cancer Screening

The Efficacy of a Brief Tailored Intervention¹

Health Behavior Unit, Department of Epidemiology and Public Health, University College London, London, WC1E 6BT, United Kingdom

Fruits and vegetables appear to confer protection against several cancers, but most adults in the United Kingdom eat substantially less than the recommended amounts. Cancer screening services could provide a valuable context in which to provide advice on increasing fruit and vegetable intake. This study examined the efficacy of a brief, tailored, psycho-educational intervention for increasing fruit and vegetable intake, carried out in a cancer screening clinic. The study was a randomized, controlled trial. 742 participants, 55–64 years of age, recruited from three cancer screening clinics, completed a baseline questionnaire. They were assigned either to the tailored intervention group or to an untreated control group. The primary outcome measure was self-reported consumption of fruit and vegetables. At 6 week follow-up there were significant increases in daily servings of fruit and vegetables in the tailored intervention group (CI, 0.87–1.25) compared with the untreated group (CI, 0.08–0.43). These results support the efficacy of a simple, written message, which is tailored to the intake and knowledge levels of the individual, for modifying cancer-protective dietary behaviors, at least in the short term. They also suggest that cancer screening clinics may be a good context for providing this service.

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