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Ann Hepatol. 2011 Oct-Dec;10(4):486-92.

Decrease of aminotransferase levels in obese women is related to body weight reduction, irrespective of type of diet.

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Biomedical Research Unit, Mexican Social Security Institute and the Research Group on Diabetes and Chronic Illnesses, Durango, Mexico.



To evaluate the efficacy of low carbohydrate diet (LCD) as compared with low fat diet (LFD) to decrease aminotransferase levels in obese women with nonalcoholic fatty liver disease.


A total of 59 women were randomly enrolled in a non-controlled clinical intervention study to receive either LCD or LFD during six months. Apparently healthy non-pregnant obese women aged 20 to 65 years were eligible to participate. Previous diagnosis of hepatic disease, serum creatinine level ≥ 1.5 mg/dL, severe life-limiting medical illness, pregnancy, active participation in other dietary program, use of weight loss drugs, or alcohol consumption ≥ 30 g per day were exclusion criteria.


A total of 31 obese women who received LCD were compared with 28 women allocated in the LFD group. There were 3 (LCD group) and 2 (LFD group) women with lost of follow-up. No differences in the proportion of type 2 diabetes, hypertension and hyperlipidemia were noted between women in the LCD and LFD groups. At end of follow-up, there were not significant statistical differences in the anthropometric and biochemical characteristics between women in both groups. The weight loss was 5.7 and 5.5% for women in the LCD LFD groups. Although the decrease of AST (31.7 and 22.4%) and ALT (41 and 33.3%) levels was more elevated in the women of LCD group, as compared with the LFD group, there were not significant statistical differences.


Our results show that weight loss, irrespective of the type of diet, reduces aminotransferase levels in obese women with NAFLD.

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