Abstract
The predominant use of glucose anaerobically by cancer cells (Warburg effect) may
be the most important characteristic the majority of these cells have in common and,
therefore, a potential metabolic pathway to be targeted during cancer treatment. Because
this effect relates to fuel oxidation, dietary manipulation has been hypothesized
as an important strategy during cancer treatment. As such, the concept of a ketogenic
diet (KD) in cancer emerged as a metabolic therapy (ie, targeting cancer cell metabolism)
rather than a dietary approach. The therapeutic mechanisms of action of this high-fat,
moderate-to-low protein, and very-low-carbohydrate diet may potentially influence
cancer treatment and prognosis. Considering the lack of a dietetics-focused narrative
review on this topic, we compiled the evidence related to the use of this diet in
humans with diverse cancer types and stages, also focusing on the nutrition and health
perspective. The use of KD in cancer shows potentially promising, but inconsistent,
results. The limited number of studies and differences in study design and characteristics
contribute to overall poor quality evidence, limiting the ability to draw evidence-based
conclusions. However, the potential positive influences a KD may have on cancer treatment
justify the need for well-designed clinical trials to better elucidate the mechanisms
by which this dietary approach affects nutritional status, cancer prognosis, and overall
health. The role of registered dietitian nutritionists is demonstrated to be crucial
in planning and implementing KD protocols in oncology research settings, while also
ensuring patients’ adherence and optimal nutritional status.
Keywords
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Biography
C. L. P. Oliveira is a doctoral degree student, Nutrition and Metabolism, Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Biography
C. M. Prado is a registered dietitian, an assistant professor, and CAIP Chair in Nutrition, Food, and Health, Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Biography
S. Mattingly is a postdoctoral fellow, Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta, Canada.
Biography
M. B. Sawyer is an associate professor, Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, Alberta, Canada.
Biography
R. Schirrmacher is an associate professor, Department of Oncology, Medical Isotope Cyclotron Facility, University of Alberta, Edmonton, Alberta, Canada.
Biography
E. J. Fine is a clinical professor, Department of Radiology (Nuclear Medicine), Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, NY.
Article info
Publication history
Published online: March 30, 2017
Accepted:
February 2,
2017
Received:
June 29,
2016
Footnotes
STATEMENT OF POTENTIAL CONFLICT OF INTEREST No potential conflict of interest was reported by the authors.
FUNDING/SUPPORT None to report.
Identification
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© 2018 by the Academy of Nutrition and Dietetics.