Iodine

Elevated iodine levels might mean you're consuming too much of this important mineral, which can come from eating lots of iodine-rich foods like seafood, dairy products, and iodized salt, or from taking supplements or certain medications that contain iodine. Sometimes, high iodine levels can lead to a condition called iodine-induced hyperthyroidism, where your thyroid gland makes too much thyroid hormone because of the extra iodine. It's key to remember that while we need iodine to stay healthy, having too much can mess with the balance of our thyroid function, which affects our metabolism and other body processes.

Symptoms of high levels of iodine could include a fast or irregular heartbeat, nervousness or irritability, sleep disturbances, weight loss despite a good appetite, and frequent bowel movements. In some cases, there might be swelling at the base of your neck due to an enlarged thyroid gland.

Low iodine levels might mean that your body isn't getting enough of this important mineral, which could be due to not eating enough iodine-rich foods like seafood, dairy products, and iodized salt. If you follow a vegan or vegetarian diet, or live in an area with soil that's low in iodine, this could also contribute to your low iodine levels. Some medications or supplements, like certain antacids or thyroid medications, might affect how well your body absorbs iodine. Low iodine levels can be linked to thyroid-related issues, since your body needs iodine to make thyroid hormones that help control your metabolism, growth, and other important functions.

Symptoms of low levels of iodine may include fatigue, weight gain, feeling cold, dry skin, hair loss, and trouble concentrating. In severe cases, a swollen thyroid gland, or goiter, may also be observed.