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 with the pituitary gland. TSH levels are first ...

Medically reviewed by Kelly Wood, MD Key Takeaways Thyroid blood tests help figure out how well your thyroid gland is working.TSH helps the thyroid gland know when to make more thyroid hormones. Free ...

A TSH blood test can help your doctor determine if your thyroid gland is working as it should. In cases of hyperthyroidism, TSH levels usually fall below 0.4 mIU/L, indicating an overactive thyroid.

Elevated levels of thyroid hormone appear to harm the aging brain, increasing seniors' risk of dementia or other cognitive disorders, a new study finds. High levels of thyroid hormone -- a condition ...

Thyroid hormone plays a key role in regulating a range of physiologic functions, including metabolism, temperature, heart rate, and growth. It accomplishes this impressive array of activities by ...

Pregnancy significantly affects the thyroid gland and its function due to increased metabolic needs. For example, a maternal body requires 40% to 100% more thyroid hormones to meet the needs of the ...

A thyroid storm is one of the most serious medical emergencies involving the thyroid gland. Although it is rare, the condition can become life-threatening if n ...

Hyperthyroidism affects TSH levels, causing them to fall below expected ranges. Hyperthyroidism can occur when the thyroid gland in the neck produces too much thyroid hormones, including ...