Final answer:
The Dietary Guidelines for Americans are updated every five years to provide guidance on healthy eating patterns based on scientific knowledge and advancements.
Explanation:
The Dietary Guidelines for Americans are updated every five years by the U.S. Department of Agriculture and Health and Human Services to provide guidance on healthy eating patterns.
These guidelines aim to encourage healthy eating patterns to promote health and prevent chronic diseases for current and future generations.
The overarching goal is to recommend components of a healthy and nutritionally adequate diet based on scientific knowledge and advancements.
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