Hyperthyroidism is a condition that occurs when the thyroid gland in your neck is overactive and prompts the releases too much thyroid-stimulating hormone, causing problems with the nervous and cardiac systems. Symptoms of the condition include sudden weight changes, increased appetite, anxiety, feeling hot, trouble sleeping, and sweating. Treatments for hyperthyroidism are varied.
Radioactive iodine works by shrinking the thyroid gland, causing it to release fewer hormones, and usually requires three to six months to take proper effect. The treatment is used in 70 percent of cases of hyperthyroidism and is widely considered to be safe. The downside to radioactive iodine is that your thyroid can begin to rely on it, leading to underactivity or hypothyroidism.
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