Serum Ferritin Changes Increase Risk of Gestational Diabetes Mellitus: Study
A new study published in the journal BMC Pregnancy and Childbirth has found that variations in serum ferritin levels across pregnancy are independently associated with gestational diabetes mellitus (GDM). The study was conducted in China by Shaofei Su and fellow researchers.
The study analyzed 10,871 pregnant women as part of the China Birth Cohort Study. Serum ferritin was estimated in the first and second trimesters using the direct chemiluminescence method. The participants were divided into five quintiles based on the ferritin levels obtained during the first trimester. Trimester-specific median values categorized serum ferritin into four subgroups. GDM was diagnosed at 24–28 weeks of gestation by using the 75 g OGTT. Multivariate modified Poisson regression was used to estimate the independent relation between serum ferritin levels and the risk of developing GDM.
Key Findings
• Ferritin levels at Baseline: The median serum ferritin level at first trimester was 57.7 ng/mL.
• GDM Incidence: 13.5% of participants, i.e., 1,468 women developed GDM.
• Adjusted Risk Ratios for GDM by Serum Ferritin Quintiles:
•Second quintile: RR 1.099 (95% CI: 0.940–1.285)
• Third quintile: RR 1.228 (95% CI: 1.055–1.430)
• Fourth quintile: RR 1.186 (95% CI: 1.018–1.383)
• Fifth quintile: RR 1.179 (95% CI: 1.017–1.367)
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