Sub-clinical hypothyroidism is heart failure risk

December 2005
GP: General Practitioner;12/9/2005, p7
This article focuses on a study conducted in the U.S., according to which patients with sub-clinical hypothyroidism are at increased risk of congestive heart failure (CHF). An association between overt hypothyroidism and cardiovascular disease has been widely recognised, but this is the first study to find an elevated cardiovascular risk in patients with a sub-clinical form of the disease. The study included 2,730 people aged between 70 and 79 years. The researchers measured their baseline levels of thyroid stimulating hormone (TSH) and identified those with TSH levels of 4.5mIU/L or greater as suffering from sub-clinical hypothyroidism. Sub-clinical hypothyroidism was associated with an increased risk of CHF, but not with other cardiovascular events.


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