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2025 Dietary Guidelines Advisory Committee Systematic Reviews

The 2025 Dietary Guidelines Advisory Committee is conducting systematic reviews with support from USDA's Nutrition Evidence Systematic Review (NESR) team. Detailed information is available at the link below about the 2025 Advisory Committee’s systematic reviews, and NESR’s methodology used to conduct them.

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How NESR Works 

Learn more about our process and the team behind it.

View the NESR Process

Nutrition Evidence Systematic Review (NESR), formerly NEL

NESR formally as NEL

Nutrition Evidence Library was renamed to Nutrition Evidence Systematic Review (NESR) to communicate that we are a team of professionals who specialize in conducting systematic reviews on food- and nutrition-related topics. 

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2020 Dietary Guidelines Advisory Committee Systematic Reviews 


USDA’s Nutrition Evidence Systematic Review (NESR) team supported the 2020 Dietary Guidelines Advisory Committee’s science-based review of specific topics and supporting scientific questions related to nutrition and health – from birth into older adulthood.

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The Pregnancy and Birth to 24 Months Systematic Review Project 

Women holding child with her hand on another womens pregnant belly

The Pregnancy and Birth to 24 Months (P/B-24) Project was jointly led by the USDA and the US Department of Health and Human Services. For the P/B-24 Project, NESR conducted systematic reviews on a select number of questions on diet and health for infants, toddlers, and women who are pregnant.

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More information about our process

NESR Staff

NESR Staff

We handle all aspects of the work necessary for timely execution of systematic reviews in accordance with NESR methodology. Learn more

Expert Groups

Expert Groups

We convene groups of external experts to review the state of the science on nutrition and health. Learn more

Advancing NESR

Advancing NESR Methodology

We ensure that our methodology remains state-of-the-art. Learn more



We ensure that each systematic review is transparent and accessible to the public. 
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