An elemental diet contains easily absorbable proteins in the form of amino acids, very minimal fat content, and easily absorbable vitamins and mineral content. Elemental diets have been used to maintain nutrition and reduce diarrhea (because absorption in the upper intestine can reduce stool volume) in patients with inflammatory bowel diseases. Use of an elemental diet formula was studied in patients with cancer for its effect on radiation-induced diarrhea (Russell, 1975). Use of an elemental diet as an oral rinse prior to swallowing has been tested for its effect on mucositis.

Russell, R.I. (1975). Progress Reports: Elemental diets. Gut, 16, 68–79. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1410941/pdf/gut00494-0076.pdf