Hypothyroidism

Hypothyroidism Over-Treatment Linked to Risk of Atrial Fibrillation

▫️Low levels of thyroid stimulating hormone (TSH) that result from the over-treatment of hypothyroidism are associated with a significantly increased risk of atrial fibrillation and stroke, according to results from a large, population-based study using data from the Veterans Health Administration.
▫️The study received funding from the National Institute on Aging and the Michigan Biology of Cardiovascular Aging program.
▫️Endogenous hyperthyroidism has been shown to be associated with cardiovascular risks, however, the effects of exogenous hyperthyroidism, defined as lower TSH levels caused by exogenous factors – specifically medical over-treatment of hypothyroidism – have not been well established.
▫️Levothyroxine for hypothyroidism is the most commonly prescribed medication in the United States, and as over-replacement is known to be very common, the issue is important.
▪️۸۹th Annual Meeting of the American Thyroid Association.

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