Dysphagia Diet Standardisation Initiative (IDDSI)
IDDSI is an international collaboration of
professionals who developed a standardized
framework for labeling texture-modified foods and thickened liquids. The framework is designed to avoid the confusion created by variable terminology and definitions to describe modified diets around the world. The effort is expected to improve the safety and care for all individuals with dysphagia, across all cultures.
History of IDDSI
In 2012, an international collaboration of a multidisciplinary group of volunteers from a variety of settings—including nutrition and dietetics, medicine, speech-language pathology, occupational therapy, nursing, patient safety, engineering, and food science and technology—came
together to develop international standardized terminology and definitions for texture-modified foods and thickened liquids for persons with dysphagia.
The first steps of IDDSI involved completing international reviews of literature. The first, completed in 2013, looked at
published literature and existing national standards. The next project took place in 2014, which was a systematic
review of modified food texture and liquid consistency. Next, IDDSI conducted surveys of four stakeholder groups—health professionals, patients and caregivers, industry, and researchers—throughout 2014 and 2015. More than 5,000 responses yielded overwhelmingly positive
support for the initiative and a standardized international framework.
ASHA's Involvement With IDDSI
- ASHA and the Academy of Nutrition and Dietetics AND
announce IDDSI's official launch date of May 1, 2019, for implementation in the United States.
- ASHA and the Academy of Nutrition and Dietetics announced their support of the global initiative in a
joint press release.
- The ASHA Board of Directors passed a resolution (BOD 42-2016) to support the IDDSI Framework.
- ASHA agreed to be listed as a supporter of this initiative and surveyed ASHA members to solicit information for the project.
Disclaimer: ASHA supports the IDDSI Framework, and ASHA is one of the organization that is sharing it with members who assess and treat individuals with dysphagia. ASHA does not endorse any product, program, or procedure. For specific questions and more information on the framework,
testing methods, FAQs, and implementation resources, please visit the