The 2018 World Cancer Research Fund/American Institute for Cancer Research Score and Cancer Risk: results from the diabetes prevention program outcomes study
Ashley H Tjaden , Audrey A Goldbaum , Sharon L Edelstein , Brandy M Heckman- Stoddard , Jill Reedy , William H Herman , Mary Hoskin , William C Knowler , Mathias Schlögl , Karla A Temple , Elizabeth M Venditti , Karol Watson , Marinella Temprosa , Marissa M Shams-White , the DPP Research Group
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引用次数: 0
Abstract
Background
Modifying lifestyle factors may reduce the incidence of obesity, diabetes, and cancer.
Objectives
We examined how alignment with the 2018 World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) Cancer Prevention Recommendations using the 2018 WCRF/AICR score was associated with incident lifestyle-related cancer in adults with prediabetes in the Diabetes Prevention Program (DPP, 1996–2001) and DPP Outcomes Study (DPPOS, 2002–2020), an observational follow-up of a randomized clinical trial.
Methods
Participants were randomly assigned to lifestyle, metformin, or placebo interventions (mean: 3 y) and followed for an additional 19 y. The 2018 WCRF/AICR score (0–7 points; higher score, better alignment) was calculated from body weight, physical activity, diet, and alcohol components at 0, 1, 5, 6, 9, and 15 y after randomization. Incident cancer was based on the 2018 WCRF/AICR 3rd Expert Report (18 cancers associated with lifestyle). Adjusted Cox proportional hazard models estimated associations between the score (baseline [0], change from 0 to 1 y, time dependent) and lifestyle-related cancer.
Results
Participants’ (N = 3000) mean baseline WCRF/AICR score was 3.2 (SD: 1.1). There were 403 incident lifestyle-related cancer cases. Scores improved after 1 and 15 y (mean increase = 0.43 and 0.27 points, respectively, both P < 0.001). The baseline score was not associated with cancer risk. However, a 1-unit score improvement from 0 to 1 y and time-dependent scores were significantly associated with a 14% (hazard ratio [HR]: 0.86; 95% confidence interval [95% CI]: 0.76, 0.97) and 9% (HR: 0.91; 95% CI: 0.83, 0.997) lower risk, respectively, with no effect modification by intervention group or diabetes status. In exploratory by-component analyses, no single component was associated with risk.
Conclusions
Alignment with WCRF/AICR recommendations may lower cancer risk in adults with prediabetes and type 2 diabetes, highlighting the importance of considering lifestyle factors for cancer prevention.
Trial registration number
Diabetes Prevention Program, NCT00004992; Diabetes Prevention Program Outcomes Study, NCT00038727.
期刊介绍:
American Journal of Clinical Nutrition is recognized as the most highly rated peer-reviewed, primary research journal in nutrition and dietetics.It focuses on publishing the latest research on various topics in nutrition, including but not limited to obesity, vitamins and minerals, nutrition and disease, and energy metabolism.
Purpose:
The purpose of AJCN is to:
Publish original research studies relevant to human and clinical nutrition.
Consider well-controlled clinical studies describing scientific mechanisms, efficacy, and safety of dietary interventions in the context of disease prevention or health benefits.
Encourage public health and epidemiologic studies relevant to human nutrition.
Promote innovative investigations of nutritional questions employing epigenetic, genomic, proteomic, and metabolomic approaches.
Include solicited editorials, book reviews, solicited or unsolicited review articles, invited controversy position papers, and letters to the Editor related to prior AJCN articles.
Peer Review Process:
All submitted material with scientific content undergoes peer review by the Editors or their designees before acceptance for publication.