Iodine Deficiency More Common in Women, Especially During Pregnancy
April 21, 2026
Women are more susceptible to iodine deficiency than men are, especially during pregnancy.
Iodine, a chemical the body uses to make thyroid hormones, is critical for thyroid function, metabolism, and fetal brain development. It can be found in dairy, fish, meat, and table salt.
With an increase in plant-based diets, like vegan diets, more people are turning to sea salt, which does not have iodine. Changes in food manufacturing could increase the number of women at risk of developing iodine deficiency.
According to Jonathan D. Rich, D.O., a primary care doctor with Mercy Personal Physicians Downtown in Baltimore, the condition is extremely rare.
“In pregnant women, their thyroid demands increase. The thyroid kind of produces the energy for the body, so as you’re pregnant, you need more thyroid hormone. If you need more thyroid hormone, you need more iodine, which is the building block for the thyroid hormone. So, in pregnant women, it’s something that could be more common, although still very rare in this country,” Dr. Rich said.
Iodine deficiency symptoms include fatigue, weight gain, cold sensitivity, dry skin, and a swollen neck. It can be treated by adding table salt (enriched with iodine) to your diet.
View Mercy primary care physician Dr. Jonathan Rich’s interview regarding iodine deficiency.
About Mercy
Founded in 1874 in Downtown Baltimore by the Sisters of Mercy, Mercy Medical Center is a 183-licensed bed, acute care, university-affiliated teaching hospital. Mercy has been recognized as a high-performing Maryland hospital (U.S. News & World Report); has achieved an overall 5-Star quality, safety, and patient experience rating (Centers for Medicare and Medicaid Services); is A-rated for Hospital Safety (Leapfrog Hospital Safety Grade); and is certified by the American Nurses Credentialing Center as a Magnet™ hospital. Mercy Health Services is a not-for-profit health system and the parent company of Mercy Medical Center and Mercy Personal Physicians.
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