Glycemic patterns from continuous glucose monitoring devices among women with regular and irregular menstrual cycles
Wang, Z.; Asokan, G.; Zhang, B.; Werdin, S.; Bojorquez-Ramirez, P.; Suharwardy, S. H.; Onnela, J.-P.; Williams, M. A.; Coull, B. A.; Mahalingaiah, S.
Show abstract
Polyendocrine metabolic ovarian syndrome (PMOS) and early-life irregular cycles (ELIC) carry higher metabolic risks, but real-world glycemic patterns remain inadequately characterized. We analyzed 247,316 continuous glucose monitoring (CGM) days from 716 consented and enrolled participants (11/2019-08/2026) in the Apple Women's Health Study, using cluster-weighted generalized estimating equations to evaluate associations between PMOS, ELIC, and glycemic metrics. Same-day wearable-assessed physical activity, digital dietary logs, and medication health records were assessed as effect modifiers. Compared to participants without PMOS and with regular cycles, those with PMOS had higher mean glucose (6.81 mg/dL; 95% CI: -0.70, 14.72) and %observations above target range (3.77%; 95% CI: 0.04, 8.14). Estimates were smaller-in-magnitude for participants without PMOS but with ELIC, and larger for PMOS with androgen excess. Meeting activity goals, consuming protein-/fiber-rich diets, or using metformin/GLP-1 receptor agonists attenuated these associations. PMOS/ELIC were associated with unfavorable glycemic profiles, suggesting opportunities for risk identification and modification.
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