Prevalence and Risk Factors of MASLD in Prediabetes and Type 2 Diabetes Mellitus in Belgium and The Netherlands

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Background: Metabolic dysfunction-associated steatotic liver disease (MASLD) is closely intertwined with glucose metabolism status (GMS). Bi-national comparative epidemiological data are lacking; therefore, this study aimed to provide new insights into MASLD and fibrosis prevalence and risk factors in Belgium, while comparing data from The Netherlands to uncover cross-country differences. Materials and Methods: A prospective cohort study (2019–2024) in Belgian primary and secondary care was compared with the Dutch Maastricht Study. Liver fat was measured using CAP (FibroScan®), and anthropometric, clinical, and biochemical data were collected. Associations with CAP were analysed using multivariable linear regression, including sex, age, BMI, MetS, high SBP, CVD history, and country. Results: A total of 2436 individuals (Belgium and The Netherlands) were screened, of which 1928 were eligible: MASLD with normal GMS (38.3%), prediabetes (19.2%), and type 2 diabetes mellitus (T2DM; 42.5%). Belgian participants with T2DM had higher BMI and prevalence of MASLD. CAP values were significantly associated with female sex (−7.5 dB/m, 95%CI (−11.834; −3.056), p < 0.001), BMI (5.184 dB/m, 95%CI (4.627; 5.741), p < 0.001), and MetS (13.7 dB/m, 95%CI (8.456; 18.994), p < 0.001). Country-specific interactions showed differing effects of high SBP and CVD on CAP between Belgium and The Netherlands, with only the inverse association of CVD history (−10.756, 95%CI (−17.485; −4.027), p = 0.002) with CAP in The Netherlands being significant. Conclusions: MASLD and fibrosis are common in people with prediabetes and T2DM, underscoring the need for early detection and management. Obesity and metabolic risk were key factors, while a history of CVD appeared protective in the Dutch cohort but not in the Belgian one.

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