A new study warns that excessive iodine exposure might also be detrimental to maternal thyroid health and recommends a lower limit for maternal iodine intake during pregnancy than that currently advised by the WHO. Iodine is an essential micronutrient for thyroid hormone synthesis.
How much iodine should a pregnant woman take?
The US recommended daily allowances (RDA) for iodine intake are 150 mcg in adults, 220 to 250 mcg in pregnant women, and 250 to 290 mcg in breastfeeding women.
What are symptoms of too much iodine?
As a result, the thyroid gland enlarges, forming a goiter. (Goiters can form when the thyroid gland is underactive or overactive.) If people consume very large amounts of iodine, they may have a brassy taste in their mouth and produce more saliva. Iodine can irritate the digestive tract and cause a rash.
When is iodine most important during pregnancy?
During pregnancy, you need about 50% more iodine. It’s especially important during the first trimester, when your baby’s thyroid gland is developing and still unable to produce thyroid hormone, which is needed for normal brain development, according to researchers from Boston Medical Center.
What is the effect of too little iodine in a pregnant woman’s diet?
Severe iodine deficiency is associated with an array of adverse effects, including goiter, cretinism, neonatal hypothyroidism, growth retardation, and increased risks of pregnancy loss and infant mortality (17). Thyroid hormone is particularly critical for fetal and infant neurodevelopment.
Why is iodine needed during pregnancy?
Iodine is essential for the production of maternal and fetal thyroid hormones that regulate the development of the fetal brain and nervous system (1). A woman’s iodine requirements increase substantially during pregnancy to ensure adequate supply to the fetus (2).
How can I get iodine while pregnant?
An easy way to make sure that you are getting iodine in your diet is to use iodized salt when cooking and at the dinner table. You can also take a daily prenatal vitamin that contains at least 150 mcg of iodine if you are already pregnant or are planning to become pregnant.
Is it safe to take iodine everyday?
Iodine is POSSIBLY UNSAFE when taken by mouth in high doses. Do not take more than 1100 mcg of iodine per day if you are over 18 years old; do not take more than 900 mcg of iodine per day if you are 14 to 18 years old. Higher intake has been shown to cause thyroid problems in the newborn in some cases.
How long does iodine stay in your system?
Median time for urinary iodine level to normalize was 43 days, with 75% of subjects returning to baseline within 60 days, and 90% of subjects within 75 days.
Can iodine make you gain weight?
Adding more iodine to your diet may help reverse the effects of a slow metabolism, as it can help your body make more thyroid hormones. Low iodine levels may slow your metabolism and encourage food to be stored as fat, rather than be burned as energy. This may lead to weight gain.
Does iodine help with pregnancy?
Iodine is essential for healthy brain development in the fetus and young child. A woman’s iodine requirements increase substantially during pregnancy to ensure adequate supply to the fetus. Most foods are relatively low in iodine content.
Do prenatal vitamins have iodine?
Of the prenatal multivitamins, almost 58% of products contained iodine, and 91% contained 150 mcgs per daily dose. The iodine source was potassium iodide in about 75% of the brands, and the sources for the rest was kelp and one brand used inactivated yeast.
Where do you get iodine naturally?
Fish (such as cod and tuna), seaweed, shrimp, and other seafood, which are generally rich in iodine. Dairy products (such as milk, yogurt, and cheese), which are major sources of iodine in American diets. Iodized salt, which is readily available in the United States and many other countries*
What is the most common cause of iodine deficiency?
Iodized salt has iodine, but not all salt is iodized. What is the most common cause of iodine deficiency? Pregnancy and breastfeeding put women at risk for iodine deficiency.
Which of the following is the richest source of iodine?
The foods highest in iodine include seaweed, dairy, tuna, shrimp and eggs. Additionally, most table salt has been iodized, providing an easy way to add iodine to your meals.