During RT, nutritional interventions positively influenced outcomes, and counseling was of similar/higher benefit; in the medium term, only counseling exerted a significant impact on patient outcomes.

During radiotherapy, both interventions positively influenced outcomes; dietary counseling was of similar or higher benefit, whereas even 3 months after RT, it was the only method to sustain a significant impact on patient outcomes.

Background: In our published randomized trial in colorectal cancer, group 1 (n = 37) received individualized nutritional counseling and education about regular foods, group 2 (n = 37) received dietary supplements and consumed their usual diet of regular foods, and group 3 (n = 37) consumed their usual diet of regular foods. Neither group 2 nor group 3 received individualized counseling. Early nutritional counseling during radiotherapy was highly effective at reducing acute radiotherapy toxicity and improving nutritional intake/status and quality of life (QoL). Efficacy persisted for 3 mo after the intervention. Objective: The objective was to perform long-term follow-up in survivors of that clinical trial to specifically evaluate survival, late toxicity, QoL, and nutritional variables. Design: Medical data were collected from patients' records, and prescheduled interviews were conducted by dietitians for individualized evaluations. Analyses and comparisons between groups (adjusted for stage) were performed after a median follow-up of 6.5 (range: 4.9-8.1) y.

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