The associations between lipid profiles and visceral obesity among gastrointestinal cancer patients: a cross-sectional study

Background Visceral obesity is associated with cancer incidence and prognosis. Altered lipid profiles are frequently seen in visceral obese patients. The blood test of lipid profiles is more convenient and has no radical side effects than computed tomography (CT), which is presently the most accurate way to measure visceral fat area. This article aims to investigate the associations between lipid profiles and visceral obesity in gastrointestinal cancer patients. Methods In total, 399 patients newly diagnosed with gastrointestinal cancer were enrolled in this observational study. Lipid profiles were obtained from blood samples, and visceral fat mass area (VFA) was measured by CT. VFA >= 100 cm(2) was considered visceral obesity. The area under the receiver operating characteristic curve (AUROC) was utilized to evaluate the prognostic powers of lipid parameters for viscerally obese gastrointestinal cancer patients. Results Patients who had visceral obesity had higher triglyceride (TG) levels (1.20 +/- 0.60 vs. 0.87 +/- 0.57 mmo/L, P < 0.001), total cholesterol (TC) levels (3.57 +/- 0.84 vs. 3.40 +/- 0.82, P = 0.044), and low-density lipoprotein (LDL-C) levels (2.08 +/- 0.66 vs. 1.94 +/- 0.66, P = 0.047) and lower high-density lipoprotein (HDL-C) levels (0.88 +/- 0.24 vs. 1.00 +/- 0.26, P < 0.001) than those in the normal group. TG was positively correlated with VFA (r = 0.299, P < 0.001), while HDL-C was inversely correlated with VFA (r = -0.237, P < 0.001). TG and HDL-C had predictive capacity for visceral obesity at cutoff levels of 0.92 mmol/L (AUROC 0.700, 95% CI, 0.653-0.745, P < 0.001) and 0.98 mmol/L (AUROC 0.700, 95% CI, 0.585-0.682, P < 0.001), respectively. TG > 0.92 mmol/L with HDL-C < 0.98 mmol/L was linked with an increased risk of visceral obesity (OR = 4.068, 95% CI, 2.338-7.079, P < 0.001). Conclusions Lipid profiles were significantly correlated with VFA. Gastrointestinal cancer patients with TG > 0.92 mmol/L and HDL-C < 0.98 mmol/L were at elevated risk of visceral obesity in the Chinese population. Identifying visceral obesity and taking proper actions in gastrointestinal cancers are helpful for overall tumor prognosis.