Excess iodine intake in the mother may block thyroid function in the fetus, leading to hypothyroidism and goitre, and is associated with poorer mental and psychomotor development or behaviour problems in children.22 56 64 However, the risk for adverse effects of iodine supplementation is higher in cases of preconception ID due to sudden increase of iodine intake, and should therefore not be the case in Sweden where the normal population is iodine sufficient.65
Excess iodine intake may affect the development of Hashimoto's thyroiditis.
Zhao et al. (2014) found a significant correlation between
excess iodine intake and thyroid disease incidence (3).
Iodine is the active ingredient in many thyroid supplements on the market, but research has shown
excess iodine intake to make problems worse for the Hashimoto's case.
Thyroglobulin is a sensitive measure of both deficient and
excess iodine intakes in children and indicates no adverse effects on thyroid function in the UIC range of 100 - 299 micrograms / L: a UNICEF / ICCIDD Study Group Report.
Not exact matches
Excess soybean
intake with
iodine deficiency caused abnormal growth of the thyroid gland.
Dramatic synergism between
excess soybean
intake and
iodine deficiency on the development of rat thyroid hyperplasia.
These experts believe the low
iodine intake is then compounded by eating an
excess of foods (known as goitrogens) which inhibit the small amounts of
iodine ingested from being absorbed and converted from T4 to T3.