How often are the Dietary Guidelines for Americans (DGAs) mandated to be updated by U.S. law?

• A. Every 10 years, coinciding with a decennial federal nutrition assessment
• B. Only when the National Academies issues new DRIs, which may be unpredictable and infrequent
• C. Every year on a rolling schedule with interim updates and guidance documents issued continuously by an independent scientific committee
• D. Every 5 years

Answer: (D)