Abstract

Gestational diabetes mellitus (GDM) is a common pregnancy-related metabolic disorder with well-established 
short-term obstetric consequences and increasingly recognized long-term health implications for affected women. 
Evidence consistently demonstrates that women with a history of GDM face a substantially elevated risk of 
developing type 2 diabetes mellitus (T2DM), cardiovascular disease (CVD), metabolic syndrome, and other 
chronic conditions later in life. This evidence-based synthesis reviews the pathophysiology of GDM, immediate 
obstetric outcomes, and postpartum metabolic trajectory to contextualize these long-term risks. It further 
examines the epidemiological evidence linking GDM to T2DM, CVD, metabolic syndrome, chronic kidney 
disease, and adverse outcomes in subsequent pregnancies, as well as the biological mechanisms that may underlie 
these associations, including persistent insulin resistance, chronic inflammation, oxidative stress, and postpartum 
weight gain. Current strategies for screening, prevention, and intervention, ranging from postpartum glucose 
testing and lifestyle modification to pharmacologic therapy when indicated, are also discussed. Despite growing 
knowledge, important gaps remain regarding optimal screening intervals, long-term preventive strategies, and the 
causal pathways linking GDM to chronic disease. Addressing these gaps through robust longitudinal research and 
improved postpartum follow-up may significantly reduce the long-term disease burden associated with GDM and 
improve women’s health across the life course.