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 ...

Researchers have known for decades that different brands of lab machines produce different results. The fix is easy — but not ...

Metformin use was associated with a reduction in thyroid-stimulating hormone (TSH) levels among patients with type 2 diabetes who also had treated hypothyroidism, a new large database analysis finds.

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Dear Doctor: My mother and father have hypothyroidism, as do my two younger sisters. Now I've been experiencing symptoms that would indicate thyroid problems. My doctor checked my T3 and TSH levels, ...

When assessing thyroid function, thyroid hormone levels ― particularly free thyroxine (FT4) levels ― consistently show stronger associations with a wide array of clinical conditions than the standard ...

A randomized crossover trial evaluated the efficacy of different l-thyroxine dosing strategies and different target thyroid-stimulating hormone (TSH) ranges in patients with treated hypothyroidism.

Planning a pregnancy? Don’t skip TSH testing. Dr Gupta explains how even mild thyroid imbalance can affect fertility and pregnancy outcomes.

Certain thyroid hormone patterns in mothers were tied to behavioral development in young boys, a birth cohort study suggested. Among nearly 2,000 mother-child pairs, boys born to mothers with high ...