Association of Conventional and Unconventional Lipid Profiles with Visceral Fat Area in Overweight/Obese Individuals with Type 2 Diabetes Mellitus.

Several lipid metabolism-related profiles have been explored for their association with obesity, but no consensus has been reached. Therefore, this study aimed to comprehensively analyze the correlation between conventional and unconventional lipid profiles and visceral fat area (VFA) in overweight/obese patients with type 2 diabetes mellitus (T2DM). Emphasizing the overall relationship between lipid metabolism and visceral fat accumulation. This cross-sectional study included 1288 overweight/obese T2DM patients, with VFA measured using bioelectrical impedance analysis and visceral fat obesity (VFO) was defined as VFA ≥ 100 cm². Both conventional lipid profiles include total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-c), high-density lipoprotein cholesterol (HDL-c), and lipoprotein(a), and unconventional lipid profiles include lipid composite index (LCI), platelet/ HDL-c ratio (PHR), remnant cholesterol (RC), TG/HDL-c, Castelli Risk Index I (CRI-I), Castelli Risk Index II (CRI-II), Non-HDL-c, atherogenic index of plasma (AIP) and atherogenic coefficient (AC) were analyzed. The study population was divided into non-VFO and VFO groups, The relationship between conventional and unconventional lipid profiles and VFO was evaluated. Compared to the non-VFO group, the VFO group exhibited significantly higher levels of TG, lipoprotein(a), LCI, RC, TG/HDL-c, CRI-I, CRI-II, AIP, and AC (all P < 0.05). Univariate analysis revealed that RC, TG, LCI, TG/HDL-c, CRI-I, CRI-II, AIP, and AC were positively correlated with VFA and VFO, while HDL-c and lipoprotein(a) were negatively correlated (all P < 0.05). Logistic regression identified RC as an independent risk factor for VFO (OR: 1.667, 95% CI: 1.216-2.285, P = 0.001). Among lipid profiles, RC is independently and significantly associated with VFO, underscoring its role in lipid metabolism and abdominal obesity management, especially in overweight/obese T2DM patients.