Medically reviewed by Kelly Wood, MD Key Takeaways High TSH levels can mean you have an underactive thyroid or a pituitary gland tumor.Low TSH levels can mean you have an overactive thyroid or issues ...

About 15 percent of the 10-12 million people in the U.S. with hypothyroidism, or an underactive thyroid, continue to feel sick despite following the standard of care recommended by the American ...

Patients treated for overt hypothyroidism with the standard replacement therapy levothyroxine (LT4) often continue to show abnormal cholesterol levels despite normalization of thyroid stimulating ...

Dear Dr. Roach: I am an 82-year-old woman in good health. I recently had labwork that showed my TSH level is 6.14. I was told that I would need thyroid medicine because eventually I would feel tired ...

Thyroid-stimulating hormone (TSH) levels show a significant association with the risk of papillary thyroid cancer (PTC) that appears gender-based, with lower-than-normal serum TSH levels years before ...

Dear Dr. Roach: A few months ago, I had routine follow-up thyroid tests, and my results were normal except for a slightly high free T4 level. My doctor decreased my medication dose to 137 mcg from 150 ...

Please provide your email address to receive an email when new articles are posted on . The risk for mortality was higher among adults undergoing hemodialysis who had high thyroid-stimulating hormone ...

A new study finds that not only low but also high maternal thyroid hormone levels during early pregnancy may significantly lower the infant's IQ later in childhood. The study results, which will be ...

Dear Dr. Roach: I am an 82-year-old woman in good health. I recently had labwork that showed my TSH level is 6.14. I was told that I would need thyroid medicine because eventually I would feel tired ...

A new study finds that not only low but also high maternal thyroid hormone levels during early pregnancy may significantly lower the infant's IQ later in childhood. The study results suggest that the ...