What is hyperthyroidism?

Hyperthyroidism is when the thyroid is overactive. It makes too many hormones.

What are possible causes?
  • Inflammation of thyroid
  • Grave's disease
What are some symptoms?
  • Rapid and irregular heartbeat
  • Nervousness or irritability
  • Fatigue or muscle weakness
  • Trouble sleeping
  • Shaky hands
  • Weight loss
  • Mood swings
  • Diarrhea
What to do?
  • May need to limit or avoid large amounts of iodine
  • Consult a doctor or dietitian before making big changes
  1. How does the thyroid gland work? NCBI. https://www.ncbi.nlm.nih.gov/books/NBK279388/.n Published November 17, 2010. Updated April 19, 2018. Accessed December 1, 2020.
  2. Healthwise Staff. Thyroid Hormone Production and Function. Michigan Medicine University of Michigan. https://www.uofmhealth.org/health-library/ug1836. Updated July 28,2019. Accessed December 1, 2020.
  3. Robert, S.M. How Your Thyroid Works. endocrineweb. https://www.endocrineweb.com/conditions/thyroid/how-your-thyroid-works. Updated date October 21, 2019. Accessed December 1, 2020.
  4. Hyperthyroidism (Overactive Thyroid). National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/endocrine-diseases/hyperthyroidism. Updated August 2016. Accessed December 9, 2020.