Iodine

Individuals who would benefit from iodine level testing include those with thyroid disorder symptoms, pregnant and breastfeeding women who need increased iodine, and residents of areas with iodine-deficient soils. People on diets low in iodine-rich foods like seafood and dairy, and patients with a history of radiation therapy affecting the thyroid, also gain insights from testing.

Symptoms of low iodine include:

• Fatigue and weakness
• Weight gain
• Hair loss
• Dry, flaky skin
• Swelling in the neck from goiter (enlarged thyroid gland)
• Increased sensitivity to cold
• Slowed heart rate
• Difficulty concentrating or memory problems
• Heavy or irregular menstrual periods in women

Foods high in iodine include seafood like fish, shellfish, and seaweed, which are some of the richest natural sources. Dairy products and eggs also contain significant amounts, as does iodized salt, a common dietary addition in many countries. Additionally, certain grains and vegetables can provide iodine, though the amount varies based on the soil’s iodine content where they’re grown.

Iodine supplementation offers several benefits, especially for individuals at risk of iodine deficiency. It supports thyroid health, aiding in the production of thyroid hormones that regulate metabolism, growth, and development. For pregnant and breastfeeding women, adequate iodine is crucial for fetal and infant brain development. Supplementation can also help prevent conditions like goiter (thyroid gland enlargement) and hypothyroidism.