I was going by this…
While historically iodine deficiency has been a major concern, excess iodine intake is now a growing global issue, particularly with the rise in infertility rates. This is primarily due to over-iodization of salt and inadequate monitoring of iodine levels. Excess iodine can negatively impact reproductive health, potentially leading to decreased sperm quality in males and adverse pregnancy outcomes in females, including maternal thyroid dysfunction and congenital hypothyroidism.
Consequences of Iodine Excess:
Excess iodine can negatively impact sperm count, motility, and morphology in males, and can lead to maternal thyroid dysfunction and congenital hypothyroidism in females during pregnancy, according to research.
Excess iodine can disrupt thyroid function, potentially leading to hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid), as noted by the National Institutes of Health (NIH).
Some studies suggest a link between excessive iodine intake and increased risk of carotid intima-media thickening, a marker for atherosclerosis, according to research.
Iodine excess can also cause gastrointestinal upset, nausea, vomiting, and diarrhea. In severe cases, it can lead to delirium, confusion, lethargy, and even shock, according to the National Institutes of Health (NIH).
Neonates, individuals with autoimmune thyroid disease, and those with kidney disease are particularly susceptible to the adverse effects of excess iodine.
Sources of Excess Iodine:
Iodized salt is a common way to prevent iodine deficiency, but over-iodization can lead to excess intake.
Consuming foods high in iodine, like seaweed and kelp, can contribute to excess intake, says an article on the National Institutes of Health (NIH).
- Iodinated Medications and Supplements:
Some medications (like amiodarone) and supplements contain iodine and can contribute to excess intake, according to an article on the National Institutes of Health (NIH).
- Iodinated Contrast Media:
Used in medical imaging procedures, iodinated contrast media can also contribute to excess iodine intake.
Recommendations:
- Monitoring and Regulation:
More stringent monitoring and regulation of iodine levels in salt and other sources are needed to prevent excess intake, according to a report on the National Institutes of Health (NIH).
Raising public awareness about the risks of iodine excess is crucial, according to a study on Frontiers.
More research is needed to better understand the biological and clinical effects of iodine excess and to establish safer upper limits for iodine intake, as mentioned by the Oxford Academic