PMID- 36539856 OWN - NLM STAT- MEDLINE DCOM- 20221222 LR - 20230113 IS - 2044-5040 (Electronic) IS - 2044-5040 (Linking) VI - 12 IP - 1 DP - 2022 Dec 21 TI - The prevalence of low muscle mass associated with obesity in the USA. PG - 26 LID - 10.1186/s13395-022-00309-5 [doi] LID - 26 AB - BACKGROUND: Sarcopenia is defined as age-related low muscle mass and function, and can also describe the loss of muscle mass in certain medical conditions, such as sarcopenic obesity. Sarcopenic obesity describes loss of muscle and function in obese individuals; however, as sarcopenia is an age-related condition and obesity can occur in any age group, a more accurate term is obesity with low lean muscle mass (OLLMM). Given limited data on OLLMM (particularly in those aged < 65 years), the purpose of this study was to estimate the prevalence of OLLMM in adults aged >/= 20 years in the USA. METHODS: Data from the National Health and Nutrition Examination Survey (NHANES) 2017-2018 and 1999-2006 were used. OLLMM was defined as an appendicular lean mass, adjusted for body mass index (BMI), cut-off point < 0.789 for males and < 0.512 for females, measured by dual-energy X-ray absorptiometry (DXA). DXA was only measured in individuals 20-59 years old in NHANES 2017-2018; we therefore utilized logistic regression models to predict OLLMM from NHANES 1999-2006 for those aged >/= 60 years. The prevalence of OLLMM was estimated overall, and by sex, age, race/ethnicity, and clinical subgroup (high BMI, prediabetes, type 2 diabetes mellitus [T2DM], non-alcoholic fatty liver disease [NAFLD] with fibrosis, or post-bariatric surgery). Prevalence estimates were extrapolated to the USA population using NHANES sampling weights. RESULTS: We estimated that, during 2017-2018, 28.7 million or 15.9% of the USA population had OLLMM. The prevalence of OLLMM was greater in older individuals (8.1%, aged 20-59 years vs 28.3%, aged >/= 60 years), highest (66.6%) in Mexican-American females aged >/= 60 years, and lowest (2.6%) in non-Hispanic Black males aged 20-59 years. There was a higher prevalence of OLLMM in adults with prediabetes (19.7%), T2DM (34.5%), NAFLD with fibrosis (25.4%), or post-bariatric surgery (21.8%), compared with those without each condition. CONCLUSIONS: Overall, the burden of OLLMM in the USA is substantial, affecting almost 30 million adults. The prevalence of OLLMM increased with age, and among those with prediabetes, T2DM, NAFLD with fibrosis, or post-bariatric surgery. A unified definition of OLLMM will aid diagnosis and treatment strategies. CI - (c) 2022. The Author(s). FAU - Murdock, Dana J AU - Murdock DJ AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Wu, Ning AU - Wu N AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Grimsby, Joseph S AU - Grimsby JS AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Calle, Roberto A AU - Calle RA AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Donahue, Stephen AU - Donahue S AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Glass, David J AU - Glass DJ AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Sleeman, Mark W AU - Sleeman MW AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. FAU - Sanchez, Robert J AU - Sanchez RJ AD - Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591-6707, USA. robert.sanchez@regeneron.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221221 PL - England TA - Skelet Muscle JT - Skeletal muscle JID - 101561193 SB - IM MH - Male MH - Adult MH - Female MH - Humans MH - Aged MH - Young Adult MH - Middle Aged MH - *Sarcopenia/epidemiology MH - Nutrition Surveys MH - *Non-alcoholic Fatty Liver Disease/complications MH - *Diabetes Mellitus, Type 2/complications MH - Prevalence MH - *Prediabetic State/complications MH - Obesity/complications/epidemiology MH - Fibrosis MH - Muscles MH - Body Composition PMC - PMC9769063 OTO - NOTNLM OT - Atrophy OT - Body mass index OT - Muscle loss OT - Prevalence OT - Sarcopenia OT - Sarcopenic obesity COIS- All authors are employees and stockholders of Regeneron Pharmaceuticals, Inc. EDAT- 2022/12/21 06:00 MHDA- 2022/12/23 06:00 PMCR- 2022/12/21 CRDT- 2022/12/20 23:58 PHST- 2022/06/15 00:00 [received] PHST- 2022/11/22 00:00 [accepted] PHST- 2022/12/20 23:58 [entrez] PHST- 2022/12/21 06:00 [pubmed] PHST- 2022/12/23 06:00 [medline] PHST- 2022/12/21 00:00 [pmc-release] AID - 10.1186/s13395-022-00309-5 [pii] AID - 309 [pii] AID - 10.1186/s13395-022-00309-5 [doi] PST - epublish SO - Skelet Muscle. 2022 Dec 21;12(1):26. doi: 10.1186/s13395-022-00309-5.