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Background: Lipedema is characterized by disproportionate gluteofemoral adiposity, often regarded as a metabolic sink, yet its relationship with systemic autoimmunity, specifically celiac disease (CD), remains unexplored. Objective: We investigated the immunometabolic profiles and body composition patterns distinguishing lipedema phenotypes from celiac disease autoimmunity. Methods: This cross-sectional analysis included 3,833 women from NHANES 2011–2014. Celiac disease was defined by strict serology (tTG-IgA+ and EMA-IgA+), while the lipedema phenotype was defined as a leg-to-trunk fat ratio >90th percentile via dual-energy X-ray absorptiometry (DXA). We assessed gynoid fat mass, HOMA-IR, and neutrophil-to-lymphocyte ratio (NLR) compared to controls. Results: CD prevalence was 0.56% (n=11). Women with CD exhibited significantly lower gynoid region percent fat compared to non-celiacs (39.5% vs. 42.6%, p=0.0007). Conversely, the lipedema phenotype was associated with a distinct anti-inflammatory and insulin-sensitive profile, characterized by 44.2% lower HOMA-IR (p<0.001) and 7.6% lower NLR (p=0.012) compared to controls. While broad lipedema criteria did not reach statistical significance for CD exclusion due to low case numbers (p=0.570), no celiac cases were observed in the highest tier of gynoid adiposity. Conclusions: Although prevalence differences did not reach statistical significance, this study of US women demonstrates a phenotypic divergence where celiac disease is associated with reduced gynoid adiposity, contrasting with the superior immunometabolic profile observed in the lipedema phenotype. These findings suggest that these conditions represent opposing physiological states regarding gynoid adipose tissue function.
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Lipedema is a chronic, estrogen-sensitive adipose tissue disorder characterized by disproportionate subcutaneous fat accumulation, fibrosis, inflammation, and resistance to fat mobilization. Despite its high prevalence, lipedema remains poorly understood and frequently misdiagnosed. This narrative review proposes a novel pathophysiological model in which menopause acts as a critical turning point in the progression of lipedema, driven by estrogen receptor imbalance (ERβ predominance over ERα), intracrine estrogen excess, and adipose tissue dysfunction. We demonstrate how menopauseinduced estrogen deficiency amplifies adipose tissue dysfunction by suppressing ERα signaling, enhancing ERβ activity, and disrupting mitochondrial function, insulin sensitivity, and lipid oxidation. Concurrently, the upregulation of aromatase and 17β-HSD1, combined with the suppression of 17β-HSD2, sustains localized estradiol excess, perpetuating inflammation, fibrosis, and immune dysregulation. The molecular signature observed in lipedema closely mirrors that of other estrogen-driven gynecological disorders, such as endometriosis, adenomyosis, and uterine fibroids. Understanding these molecular mechanisms highlights the pivotal role of menopause as a catalyst for disease progression and provides a rationale for targeted therapeutic strategies, including hormonal modulation and metabolic interventions. This review reframes lipedema as an estrogen receptor– driven gynecological disorder, offering a new perspective to improve clinical recognition, diagnosis, and management of this neglected condition.