Proposed scientific questions to inform the development of the Dietary Guidelines for Americans, 2025-2030 available for public comment beginning April 15


WASHINGTON, April 14, 2022


As a first step in the process of developing the Dietary Guidelines for Americans, 2025-2030 (Dietary guidelines), the US Departments of Health and Human Services (HHS) and Agriculture (USDA) release proposed science questions for public comment. The public comment period will be open for 30 days from April 15, 2022, until May 16, 2022 at 11:59 p.m. ET. HHS and the USDA are committed to providing transparency and providing opportunities for public participation during this five-step process leading to the publication of the Dietary guidelines in 2025.

Process to develop the Dietary Guidelines for Americans, 2025-2030

update of Dietary guidelines is a multi-year, multi-step process. First, HHS and USDA invite public comment on the proposed science questions. Next, there will be a call for nominations from the public and the appointment of a Dietary Guidelines Advisory Committee (the Committee). The committee will then conduct a review of the evidence related to the scientific issues, culminating in the submission of a scientific report to the Secretaries of HHS and USDA.

The Committee will discuss its work at public meetings, and supporting materials will be provided to the public through HHS and the USDA will consider the Committee’s report, along with comments from federal agencies and the public, in developing the next edition of the Dietary guidelines. Once published, the new edition is implemented throughout the nutrition and health community, both inside and outside the federal government.

About the proposed scientific questions

The suggested questions are available on and focus on diet and health outcomes across the lifespan. This includes the relationship between diet and the risk of overweight and obesity with a new focus on weight loss and weight maintenance. Emerging questions also relate to ultra-processed foods and food-based strategies that can be used by individuals and families to support implementation of the Dietary guidelines and help prevent or manage overweight and obesity.

All priority science questions will be considered through a health equity lens to ensure that the resulting directions in the Dietary guidelines includes people from diverse racial, ethnic, socio-economic and cultural backgrounds.

HHS and USDA proposed these scientific questions based on the following criteria:

  • Relevance – The question is within the framework of the Dietary guidelines and its emphasis on diet-based recommendations, not clinical guidelines for medical treatment.
  • Importance – The question addresses an area of ​​significant public health concern, uncertainty and/or lack of knowledge.
  • Potential impact on federal programs – It is highly likely that the issue will provide the scientific basis for guidance that will inform federal food and nutrition policies and programs.
  • Avoid duplicates – The issue is not addressed by existing or planned federal evidence-based guidance (other than the Dietary guidelines).

Research availability will also be assessed for the proposed questions to determine if there is sufficient evidence available to conduct a new review or update an existing systematic review. Topics covered by existing federal resources are not included in the list of proposed scientific questions, although many will be covered in the next edition of the Dietary guidelines.

How to submit a public comment on questions

Anyone can comment via (File Number OASH-2022-0005). A link to the specific page will be posted on HHS and USDA will review all public comments posted on related to the criteria specified above to prioritize scientific questions for consideration by the Committee to inform the development of the Dietary Guidelines for Americans, 2025-2030.

Following this public comment period, HHS and USDA will be soliciting public nominations for the Dietary Guidelines Advisory Committee. The public can Register to receive email updates on Dietary guidelines development process and other related news, including future opportunities for public participation.

About Dietary guidelines

the Dietary guidelines provides science-based advice on what to eat and drink to promote health, reduce the risk of chronic disease, and meet nutrient needs. It is designed for policy makers and nutrition and health professionals to help all individuals and their families achieve healthy and nutritionally adequate diets. The information in the Dietary guidelines is used to develop, implement and evaluate federal food, nutrition and health policies. It is also the basis for federal nutrition education materials designed for the public and for nutrition education components of HHS and USDA nutrition programs.

Find more information on the Dietary guidelines visiting


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