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. 2022 Oct;32(10):3313-3323.
doi: 10.1007/s11695-022-06175-w. Epub 2022 Jul 6.

NASH Presence is Associated with a Lower Weight Loss One and 2 Years After Bariatric Surgery in Women with Severe Obesity

Fàtima Sabench #  1   2 , Laia Bertran #  2 , Margarita Vives  1 , Marta París  1 , Carmen Aguilar  2 , Salomé Martínez  2 , Jessica Binetti  2   3 , Monica Real  3 , Alja Alibalic  3 , Cristóbal Richart  2 , Daniel Del Castillo  1   2 , Teresa Auguet  4   5
Affiliations

NASH Presence is Associated with a Lower Weight Loss One and 2 Years After Bariatric Surgery in Women with Severe Obesity

Fàtima Sabench et al. Obes Surg. 2022 Oct.

Abstract

Purpose: Given that obesity is a major medical problem associated with non-alcoholic fatty liver disease and the lack of studies on postsurgery weight loss according to hepatic histology, we aimed to analyse weight loss indicators according to non-alcoholic steatohepatitis (NASH) presence one and 2 years postsurgery.

Materials and methods: The weight loss pattern of 410 women with severe obesity (SO) was analysed after sleeve gastrectomy (SG, n = 191) and Roux-en-Y gastric bypass (RYGB, n = 219) according to NASH presence at baseline and at 12 and 24 months postsurgery. Weight loss indicators: expected BMI (eBMI), excess BMI loss percentage (%EBMIL), total weight loss percentage (%TWL) and alterable weight loss percentage (%AWL).

Results: Unlike RYGB, after SG, a higher percentage of NASH patients do not reach the eBMI 2 years postsurgery. %TWL and %AWL presented no differences after RYGB despite the presence of NASH. After SG, there is a worse ponderal evolution of all indicators analysed in the presence of NASH. Unlike SG, diabetic patients lose less weight than non-diabetic patients after RYGB. The presence of NASH in diabetics had no impact on weight loss indicators, but in non-diabetics, it had an impact, particularly in the SG group.

Conclusion: The presence of NASH suggests a worse weight loss pattern through all the analysed indicators one and 2 years after SG in women. The presence of T2DM appears to result in less weight loss after RYGB, but only non-diabetic women presenting NASH lose less weight that non-diabetic women in the absence of NASH after SG.

Keywords: Bariatric surgery; NAFLD; NASH; Obesity; T2DM; Weight loss.

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