New research suggests that a thyroid medication often prescribed to older Americans may be linked to a common problem in old age -- bone loss.

Levothyroxine is a synthetic hormone often prescribed to treat hypothyroidism. People with ...

It might sound counterintuitive, but new research shows that when Long COVID strikes, younger patients appear more prone to severe symptoms than older folks.

That's tough on society as a whole, the study's lead author said.

“The impact of Long COVID is causing disproportionate morbidity [illness] and disability in younger adults in their prime who provide much of the workforc...

Women who develop subclinical thyroid issues during pregnancy, meaning symptoms haven't surfaced, could face real thyroid trouble within five years, a new study finds.

Pregnant women who were diagnosed with subclinical hypothyroidism, pointing to an under-active gland, before 21 weeks of gestation had four times the odds of developing symptomatic hypothyroidism later, a team at University...

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 called thyrotoxicosis -- was associated with thinking problems whether they came from an overactive thyroid gland or from taking thyroid medication, researchers found.

"Our results sugge...

They are called "forever chemicals" because they linger in the human body and can contribute to the risk of everything from cancer to childhood obesity.

Now, new research on per- and polyfluoroalkyl substances (PFAS) finds they also exact a huge financial toll, costing the U.S. health system billions every year.

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Millions of older adults try to manage an underactive thyroid gland with daily medication, but a new study suggests they may still be vulnerable to developing dementia as they age.

Researchers found that among over 15,000 older Taiwanese ad...

It's OK to drink coffee soon after taking a liquid thyroid medication, a new study finds.

Current product labels and treatment guidelines recommend patients take thyroid hormone replacement therapy on an empty stomach, but this new research shows that absorption of liqu...

People with hypothyroidism who are undertreated are at increased risk for longer hospital stays and higher rates of readmission, a new study warns.

In people with hypothyroidism, the thyroid gla...