Early pregnancy iron deficiency may predict hypothyroxinemia in second, third trimester

Pregnant women with iron deficiency in the first trimester are more likely to have lower levels of free thyroxine and an increased risk for hypothyroxinemia in the second or third trimester vs. those without iron deficiency in early pregnancy, according to findings from a retrospective study conducted in China.
“Overt hypothyroidism and isolated hypothyroxinemia in pregnancy have been shown to be associated with an increased risk of both adverse pregnancy complications and poor fetal neurocognitive development,” Xiaochun Teng, MD, of the department of endocrinology and metabolism,