T Nation

Bill Roberts Iodine for Thyroid Health Article


Just wondering what you guys think on his iodine recommendations, which seem to differ from this sub-forum. In it he says “I recommend 300 mcg of iodide per day, but somewhat more is fine.” He also mentioned a study in China saying that more than 800 mcg/day of iodine was associated with hypothyroidism ( this study perhaps? - http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0111937 ). That study shows that both the ‘excess iodine status group’ and ‘deficient iodine status group’ had an increased prevalence of thyroid nodules, whereas ‘sufficient iodine status group’ was much lower.

Personally I’ve been taking the LEF Sea-Iodine product (1000mcg) for awhile now and have yet to see my morning temperature hit above 97.3 (have tried different thermometers - afternoon temps seem to be around 98.2). Obviously there could be more to this than just iodine but I am definitely considering dropping the sea-iodine supplement and instead just focusing on foods with iodine and using iodized salt.


Quote from the Results section:

“The prevalence of subclinical hypothyroidism was 20.09%, 10.41%, and 2.25% for the iodine excess, sufficient and deficient iodine groups, respectively.”

“The prevalence of overt hypothyroidism was 2.56%, 1.18% and 1.05% for the iodine excess, sufficient and deficient groups, respectively.”

The iodine excess actually had a higher prevalence of overt & subclinical hypothyroidism than iodine deficient - did not expect.