The Dietary Guidelines for Americans are revised ever ___ years.

The Dietary Guidelines for Americans are revised every five years to ensure that they reflect the latest scientific evidence regarding nutrition and health. This regular updating is essential because advancements in nutrition science occur continuously, enabling the guidelines to remain relevant and effective for addressing the public's nutritional needs. The five-year cycle also allows for the assimilation of new research findings, which contributes to the formulation of recommendations that can guide individuals and communities toward healthier food choices and lifestyle habits. By adhering to this schedule, the guidelines help policymakers, health professionals, and the general public in making informed dietary decisions that promote health and prevent disease.