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There is no way to prevent hyperthyroidism in the case of Graves' disease and most other causes.

Taking too much thyroid hormone replacement can also result in hyperthyroidism, follow your treatment plan and get blood tests done regularly. In some cases, excess iodine intake, such as kelp supplements, may cause hyperthyroidism.

References:

Hyperthyroidism. EBSCO DynaMed website. Available at: https://dynamed.ebscohost.com/about/about-us. Updated March 12, 2013. Accessed November 25, 2013.

Kasper DL, Harrison TR. Harrison's Principles of Internal Medicine. 16th ed. New York, NY: McGraw-Hill; 2005.

Pearce EN. Diagnosis and management of thyrotoxicosis. Brit Med J. 2006;332:1369-1373.

Last reviewed November 2012 by Kim Carmichael, MD

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.