Hypothyroidism may impact lipid levels

The study of 9000 US patients published as a letter in JAMA Internal Medicine found only half of patients with newly diagnosed hyperlipidaemia were screened for thyroid dysfunction.

The American Thyroid Association recommends screening for hypothyroidism before lipid-lowering agents are prescribed because overt hypothyroidism is a secondary cause of hyperlipidaemia.

Among the 50% of people with elevated serum thyroid stimulating hormone (TSH) treated with levothyroxine, 75% did not require a lipid-lowering agent within one year.