How is it possible to have both hypothyroidism and hyperthyroidism?

I'm 14 and I recently learned that Oprah Winfrey has both hypo & hyperthyroidism. I learned that alot of other people also have both. I know a fair amount about the endocrine system, so i know that hyperthyroidism is caused by the body creating too much THS hormone, and hypo is caused by not enough THS, so how is it possible to have both at the same time?

Because many who are hyper, eventually become hypo. She said she started out with hyper, but ended up hypo. The thyroid can burn itself out making it go from producing too much hormone to too little hormone. Plus, Oprah has been eating tons of soy and soy slows down thyroid function.

Tags

　　Hypothermia 　　Hypotension 　　Hypoparathyroidism 　　Hypoglycemia 　　Hyperuricemia 　　Hypertriglyceridemia 　　Hyperthyroidism 　　Hypertension 　　Hyperparathyroidism 　　Hyperopia 　　Hypermobility Syndrome 　　Hyperlipidemia 　　Hyperactivity

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