Researchers with expertise in diet and cancer have an opportunity to submit written comments to inform the development of the 2020–2025 edition of the Dietary Guidelines for Americans (DGA). This is a once in five years opportunity for experts to use their research and expertise to inform federal nutrition policies, programs, and communications and ensure that cancer risk is appropriately considered within the context of the relationship between diet and health. This article describes why the DGA are important, how the current edition of the DGA compares with dietary guidelines for cancer prevention, the process to update the DGA for 2020–2025, and how and why cancer researchers should consider submitting comments to inform the update of the DGA.

More than 66,000 incident cancer cases per year in the United States are thought to be attributable to dietary factors alone (1). The evidence that nutritional factors influence cancer risk...

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