The American Society for Nutrition became the US Adhering Body to the International Union of Nutritional Sciences in 2008. However, our organizations have collaborated closely for many decades.

At ASN’s annual meeting in 1949, President E.M. Nelson reported on a meeting he had attended in London in June of 1948. The meeting had been convened to consider the formation of an International Union of Nutrition Sciences (IUNS). At this meeting, a tentative constitution and by-laws for the proposed union was prepared and adopted. Application to the International Congress of Scientific Unions was made and acted on in September of 1949.

The IUNS mission is:
-To promote advancement in nutrition science, research and development through international cooperation at the global level.
-To encourage communication and collaboration among nutrition scientists as well as to disseminate information in nutritional sciences through modern communication technology.


IUNS Newsletter October 2018 | Read online or download in pdf form.

This edition contains a report from ANEC VIII in Addis Ababa, Ethiopia and news from the IUNS Task Forces.

IUNS Newsletter May 2018 | Read online or download in pdf form.

This edition includes an update on the recent Council Meeting and a recap of the IUNS-ICN in Buenos Aires, Argentina.

IUNS Newsletter March 2017 | Read online or download in pdf form.

This edition includes an update on the Council Meeting held in January and news of the upcoming IUNS-ICN in Buenos Aires, Argentina.

IUNS Newsletter September 2016 | Read online or download in pdf form.

This edition includes updates on the revised IUNS Statutes and Rules and the latest news from the preparations of 21st IUNS-ICN in Buenos-Aires, Argentina.

IUNS 2015 Newsletter

International Congress of Nutrition

IUNS has organized International Congresses of Nutrition since 1952. In 1981, the ASN (then known as AIN) administered the International Congress in San Diego, CA (program chair: James Dinning). View the ASN Living Legends featured at the International Congress in 2009 in Bangkok, Thailand.

ASN maintains a competitive travel awards program for outstanding early-career and student investigators currently based in the U.S. The travel awards assist with costs related to attendance at the International Congresses. Funders are asked to provide grants of $3,500. Email us for more information.

2025 Congress

The 23rd International Congress of Nutrition (ICN) will be held in Paris, France August 24-29, 2025.

The American Society for Nutrition (ASN) is honored to have been one of three finalists in competition to host the 23rd International Congress of Nutrition. We are incredibly proud of our bid proposal and presentation highlighting:

  • ASN’s unmatched depth and breadth of nutrition science experience, organizational capacity and experience in running global nutrition meetings,
  • Hawai‘i’s international appeal, U.S. infrastructure and unmatched diversity of cultures, experiences, environment, accommodations, facilities, and attractions; and,
  • Our connection with the strong contingent of nutrition scientists deeply rooted in both nutrition and Hawai’i.

ICN participants were enthusiastic and supportive of ASN’s bid to host the 2025 ICN. Our delegates were informed that current U.S. immigration policies, including the travel ban, were causing concerns that seriously undermined our bid. For example, concerns were expressed regarding the ability of young scientists around the world to reliably enter the U.S. We live in challenging times in terms of border control, travel concerns, safety and security. ASN is working with the U.S. travel, meetings & conventions & scientific community to ensure continued access to the U.S. for scientists attending meetings. Brand USA, the US Travel Association and the Meetings Mean Business coalition are working to ensure safe, convenient, open travel into the U.S., and ASN is a proud to be a part of that effort.

ASN congratulates the Société Française de Nutrition and Fédération Française de Nutrition!

2021 Congress

The 22nd International Congress of Nutrition (ICN) will be held in Tokyo, Japan, in September of 2021.

Applications for open symposia during the IUNS-ICN 22nd International Congress of Nutrition are now being accepted. This call for applications is limited to academic societies and public organizations.

Information on the proposals from other types of bodies, including industry, will be provided later.

Please see below for more information and to download an application form:

Submission Deadline for Open Symposia
Friday, August 9, 2019

If you require more information or have any questions please contact the Secretariat for the 22nd IUNS-ICN:

2017 Congress

The 21st IUNS International Congress of Nutrition took place in Buenos Aires, Argentina, October 20-25, 2017. Invited papers will be published as a supplement in Advances in Nutrition. ASN’s Booth was a popular spot for ASN members and other attendees to practice hula and take selfies with entertainers from the Polynesian Cultural Center on Oahu, Hawai’i. ASN also held an Aloha Reception for VIPS including ASN members and IUNS leadership, sponsored by DuPont Nutrition & Health.

2013 Congress

IUNS held the 20th International Congress of Nutrition in Granada, Spain, Sept. 15-20, 2013. The theme for 2013 was “Joining Cultures Through Nutrition.” ASN greeted many members and Congress attendees at Exhibit #101. Invited papers were published as a supplement in Advances in Nutrition and can be accessed through the Proceedings of the International Union of Nutritional Sciences (IUNS) 20th International Congress of Nutrition (ICN) collection.