It seems that you are offline, so I am writing you an initial answer. Once you are online, you may ask follow up questions, if any.
Iodine supplementation programs is good and necessary and need to be continued, but iodine should be used “with a grain of salt,” because a growing number of susceptible individuals will be exposed to the risk of developing iodine-induced thyroid disorders. Exposure to high amounts of iodine is well tolerated in most cases.
Nevertheless, at-risk individuals may develop;
1) thyroid dysfunction even when they are exposed to increases in iodine intake universally considered as safe.
2) Iodine-induced thyroid disorders include
a) thyroid autoimmunity,
b) thyrotoxicosis (high thyroid),
c) iodine-induced goiter, and
d) hypothyroidism (low thyroid).
Assessment of actual risk for each individual can be challenging, since it is influenced by personal history, genetics, and environmental factors.
Please see the reference resource: