An Iodine Balance Experiment

The experiment was conducted between November and December with a total duration of 1 month. Referring to the experience from Harrison and Dworkin, however, considering the negative iodine balance reported, during the first 3 weeks, the diet was provided with non-iodized salt, while the diet with iodized salt was only offered in the last week. The total daily iodine intake consisted of dietary iodine intake, water iodine intake and iodine from breathing, while iodine could be excreted out of human body by urine, faces, sweat and breathing. The 24-h iodine intake and 24-h iodine excretion were determined in each individual participant, and the iodine balance was calculated accordingly.