Rising MASLD/MASH: Targeted Fibrosis Screening and Lifestyle-First Care
NAFLD/MASLD and NASH/MASH are rising globally alongside obesity and metabolic comorbidities, with NAFLD affecting roughly a quarter to a third of adults and often going undiagnosed. As fibrosis prevalence increases, projections suggest disproportionate growth in advanced disease (F3–F4) by 2030—driving higher rates of decompensation, hepatocellular carcinoma (HCC), and NASH-cirrhosis–related mortality. Fibrosis stage (and steatohepatitis) is the key predictor of progression: “at-risk” NASH (≥F2) carries a substantially higher liver-related risk, and once cirrhosis is present, surveillance for HCC/varices and monitoring for decompensation becomes central. Across NAFLD overall, cardiovascular disease and non-hepatic malignancy are leading causes of death, while liver-related death predominates as fibrosis advances.
The guidance emphasizes targeted screening and stepwise risk stratification rather than population-wide screening. In primary care/endocrinology, FIB-4 is recommended as the first-line, low-cost rule-out tool, with more frequent reassessment (every 1–2 years) for patients with prediabetes/T2DM or multiple metabolic risk factors. Secondary assessment typically uses VCTE (or ELF/MRE when appropriate) and referral to hepatology for intermediate/high risk, discordant results, or persistent aminotransferase elevation. It also underscores NAFLD’s tight links to obesity (especially visceral/“android” adiposity), T2DM (highest-impact risk factor for fibrosis progression and HCC), hypertension, dyslipidemia, obstructive sleep apnea, and CKD—so management must aggressively address cardiometabolic risk. Lifestyle therapy remains the foundation (dietary quality, exercise, weight loss when indicated), with multidisciplinary care to improve long-term adherence and outcomes.
Reference: Rinella ME, Neuschwander-Tetri BA, Siddiqui MS, et al. AASLD Practice Guidance on the clinical assessment and management of nonalcoholic fatty liver disease. Hepatology. 2023 May 1;77(5):1797-1835. doi: 10.1097/HEP.0000000000000323. Epub 2023 Mar 17. PMID: 36727674; PMCID: PMC10735173.
Ashlyn Smith
MMS, PA-C