Lipids & metabolic liver disease

Recent prevalence and trends of obesity and metabolic dysfunction‐associated steatotic liver disease (MASLD) among US adolescents: 1999 to 2020

Pediatr ObesPublished Cross-sectional study

Authors' conclusion

The study underscores the pressing need to screen at-risk adolescents for metabolic issues associated with steatotic liver diseases, given the rising obesity rates among adolescents. The high overlap between MASLD and NAFLD diagnoses indicates that the transition from NAFLD to MASLD can be effectively integrated into paediatric practice.

Study context

Population
US adolescents aged 12–17, National Health and Nutrition Examination Survey (NHANES) 1999 to 2020
Outcome
Prevalence and trends of obesity and MASLD
Follow-up
2017 to 2020; trends 1999 to 2020
Methodological detailsrepeated cross-sectional NHANES data, screening model based on FibroScan controlled attenuation parameter (CAP), New screening model developed from FibroScan CAP scores, body measurements and blood chemistry (2017 to 2020) to analyse MASLD trends 1999 to 2020
  • Repeated cross-sectional NHANES data
  • Screening model based on FibroScan CAP
  • New screening model developed from FibroScan CAP scores, body measurements and blood chemistry (2017 to 2020) to analyse MASLD trends 1999 to 2020

Main finding

As reported in the abstract

2017–2020

Prevalence of obesity and MASLD

≈20%

Obese adolescents affected by MASLD

about 70%

Observational data: associations, not effects.

Further findings

Overlap of non-alcoholic fatty liver disease (NAFLD) and MASLD

NAFLD cases also meeting MASLD criteria
97.2%

Distribution of MASLD by sex and ethnicity

More common in boys, particularly Mexican American adolescents

Characteristics of adolescents with MASLD

Significantly higher body weight, waist circumference, TG and alanine transaminase (ALT); lower HDL-C; increased risk of liver fibrosis

Risk factors for MASLD

Insufficient physical activity and poor diet quality were key risk factors

Original publication

Recent prevalence and trends of obesity and metabolic dysfunction‐associated steatotic liver disease (MASLD) among US adolescents: 1999 to 2020. Pediatr Obes. Published 19 February 2025. doi:10.1111/ijpo.70003

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