Purpose of Review <p>This review provides an overview of adipose tissue plasticity and adipogenesis as central processes regulating adipose tissue expansion, remodeling, and metabolic function in health and obesity, highlighting their relevance as potential therapeutic targets.</p> Recent Findings <p>Adipogenesis is a tightly regulated process involving the differentiation of adipose progenitor cells into mature adipocytes through coordinated transcriptional cascades, primarily driven by peroxisome proliferator–activated receptor (PPAR)γ and CCAAT/enhancer–binding protein (C/EBP) family members. This process is further modulated by multiple signaling pathways, including wingless–related integration site (Wnt), bone morphogenetic proteins (BMPs), and insulin signaling, which collectively regulate adipocyte differentiation and metabolic function. Under physiological conditions, the adipose tissue exhibits remarkable plasticity, with adipogenesis supporting lipid buffering capacity and tissue renewal. In obesity, however, chronic nutrient excess and hormonal dysregulation impair this process, favoring adipocyte hypertrophy, hypoxia, and chronic inflammation. These alterations disrupt adipokine secretion and promote ectopic lipid deposition, thereby contributing to metabolic disorders, including insulin resistance and cardiometabolic disease.</p> Summary <p>Adipose tissue plasticity and adipogenesis are critical determinants of metabolic health. Dysregulation of these processes underlies adipose tissue dysfunction and contributes to the development of obesity-related comorbidities. Targeting adipogenesis and promoting healthy adipose tissue remodeling represent promising strategies for restoring metabolic homeostasis and mitigating obesity-associated diseases.</p>