Mixed
Implementing 2020–2025 DGA-aligned school meal standards (limiting added sugars and sodium, increasing whole grains) reduces childhood BMI and systolic blood pressure, leading to significant long-term reductions in cardiovascular disease, diabetes, and cancer mortality in adulthood.
For policymakers and school administrators, updating school meal standards to limit added sugars and sodium while increasing whole grains is a high-impact intervention. It modestly improves children's immediate health (BMI, BP) and yields massive long-term societal benefits, including thousands of prevented deaths and billions in healthcare savings in adulthood.
In a best-case scenario assuming full school compliance, implementing new DGA-aligned nutritional standards would lower elementary children’s BMI by an average 0.14 (95% UI: 0.08–0.20) kg/m2 and systolic blood pressure by 0.13 (95% UI: 0.06–0.19) (95% mm Hg. Later in life, the new standards were estimated to prevent 10,600 [95% uncertainty interval (UI): 4820–16,800) annual deaths from cardiovascular disease (CVD), diabetes, and cancer in adulthood
Why this rating
Uses a Comparative Risk Assessment (CRA) model based on nationally representative NHANES data and meta-analyses, though it is a modeling study rather than a direct RCT of the policy itself.
Source
Evaluation of health and economic effects of United States school meal standards consistent with the 2020–2025 dietary guidelines for Americans
Lu Wang et al. · American Journal of Clinical Nutrition · 2023
DOI 10.1016/j.ajcnut.2023.05.031
Related findings · Mixed
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