Iodine Content of U.S. Weight Loss Food

Program: Abstracts - Orals, Featured Poster Presentations, and Posters
Session: MON 437-470-Non-neoplastic Thyroid Disorders
Basic/Clinical
Monday, June 17, 2013: 1:45 PM-3:45 PM
Expo Halls ABC (Moscone Center)

Poster Board MON-457
Manikya Kuriti*1, Elizabeth N Pearce2, Lewis E Braverman2, Xuemei He2 and Angela M Leung2
1St.Elizabeth Medical Center, Boston, MA, 2Boston University School of Medicine, Boston, MA
Background: Individuals consuming restricted diets as part of a weight loss program may be at risk for mild to moderate iodine deficiency. 

Objective: To assess the iodine content in meals and snacks from 3 U.S. weight loss programs.

Methods: A one week program of all meals (breakfast, lunch, and dinner) and snacks with no special dietary restrictions from each of 3 U.S. weight loss companies was obtained for the measurement of iodine content.  All items were stored at 4 degrees C, blended, and measured for iodine concentrations in triplicate (samples were retested a fourth time if a >25% difference was found in any of the measurements) using a Technicon Autoanalyzer spectrophotometer.  Projected weekly iodine intakes (µg/g) were calculated based on individually-labeled serving sizes; the average total daily intake (µg) is reported.

Results: 53 total items were analyzed [29 different items (7 breakfasts, 7 lunches, 7 dinners, 6 snacks, 2 desserts) from program #1; 21 different items (7 breakfasts, 7 lunches, 7 dinners) from program #2; and 3 different items (1 breakfast, 1 lunch, 1 dinner; each to be intended to be eaten daily for one week) from program #3].  The average iodine content of meals and snacks from the weight loss programs were 34.2 (program #1), 12.2 (program #2), and 70.1 (program #3) µg/day.  These daily intakes of iodine assume that individuals do not supplement their diets and consume all the food provided by the programs.

Conclusion: These results indicate that the dietary iodine intake from 3 major U.S. weight loss programs is far less than the recommendations by the Institute of Medicine for iodine intake (150 µg/day in adults).  Individuals following such weight loss programs are at risk for iodine deficiency and should be advised to take a daily multivitamin containing potassium iodide to avoid the potential adverse effects of iodine deficiency.

Nothing to Disclose: MK, ENP, LEB, XH, AML

*Please take note of The Endocrine Society's News Embargo Policy at http://www.endo-society.org/endo2013/media.cfm

Sources of Research Support: 5K23HD068552-02 (AML)