Objective To study the changes in bone mineral density and biochemical markers of bone metabolism in patients with subclinical hypothyroidism (SCH) during pregnancy. Methods Comparisons were made between normal pregnant women and pregnant women with subclinical hypothyroidism during pregnancy in bone mineral density, serum calcium (Ca), serum magnesium (Mg), serum phosphorus (P), total cholesterol (TC), triglyceride (TC), total cholesterol (TC), parathyroid hormone (PTH), bone gamma-carboxyglutamic-acid-containing proteins (BGP), and type I procollagen carboxy terminal peptides (PICP). Results The levels of P, TC, TG, PICP, BGP and bone mineral density were significantly different between pregnant women with SCH and normal pregnant women during the 1st trimester of pregnancy. Conclusion SCH during pregnancy can lead to decreased bone mineral density. |