Adherence to Mediterranean Diet and Non-Alcoholic Fatty Liver Disease: Effect on Insulin Resistance
Overview
Authors
Affiliations
Objectives: The prevalence of cardiometabolic disorders, including non-alcoholic fatty liver disease (NAFLD), is increasing in western countries, because of changes in lifestyle and dietary habits. Mediterranean Diet (Med-Diet) is effective for cardiovascular prevention, but its relationship with NAFLD has been scarcely investigated.
Methods: We included 584 consecutive outpatients presenting with one or more cardiovascular risk factor such as type 2 diabetes mellitus (T2DM), arterial hypertension, overweight/obesity, and dyslipidemia. Liver steatosis was assessed using ultrasonography. Med-Diet adherence was investigated by a validated semiquantitative nine-item dietary questionnaire; patients were divided into low, intermediate, and high adherence. Insulin resistance was defined by the 75th percentile of homeostasis model of insulin resistance (HOMA-IR; ≥3.8).
Results: The mean age was 56.2±12.4 years and 38.2% were women. Liver steatosis was present in 82.7%, and its prevalence decreased from low to high adherence group (96.5% vs. 71.4%, P<0.001). In a multiple logistic regression analysis, hypertriglyceridemia (odds ratio (OR): 2.913; P=0.002), log (ALT) (OR: 6.186; P<0.001), Med-Diet adherence (intermediate vs. low OR: 0.115; P=0.041, high vs. low OR: 0.093; P=0.030), T2DM (OR: 3.940; P=0.003), and high waist circumference (OR: 3.012; P<0.001) were associated with NAFLD. Among single foods, low meat intake (OR: 0.178; P<0.001) was inversely significantly associated with NAFLD. In 334 non-diabetic NAFLD patients, age (OR: 1.035, P=0.025), high waist circumference (OR: 7.855, P<0.001), hypertriglyceridemia (OR: 2.152, P=0.011), and Log (ALT) (OR: 2.549, P=0.002) were directly associated with HOMA-IR, whereas Med-Diet score was inversely associated (OR: 0.801, P=0.018).
Conclusions: We found an inverse relationship between Med-Diet and NAFLD prevalence. Among NAFLD patients, good adherence to Med-Diet was associated with lower insulin resistance. Our findings suggest that Med-Diet may be a beneficial nutritional approach in NAFLD patients.
Bakhshimoghaddam F, Baez D, Dolatkhah N, Sheikh M, Poustchi H, Hekmatdoost A BMC Nutr. 2024; 10(1):153.
PMID: 39609906 PMC: 11606097. DOI: 10.1186/s40795-024-00961-8.
Lago-Sampedro A, Oualla-Bachiri W, Garcia-Serrano S, Maldonado-Araque C, Valdes S, Doulatram-Gamgaram V Nutrients. 2024; 16(21).
PMID: 39519621 PMC: 11548257. DOI: 10.3390/nu16213788.
Lee J, Kim S, Lee Y, Kwon Y, Lee J Nutrients. 2024; 16(20).
PMID: 39458545 PMC: 11510508. DOI: 10.3390/nu16203551.
Huang X, Gan D, Fan Y, Fu Q, He C, Liu W Nutrients. 2024; 16(12).
PMID: 38931312 PMC: 11207114. DOI: 10.3390/nu16121956.
Dobbie L, Burgess J, Hamid A, Nevitt S, Hydes T, Alam U Nutrients. 2024; 16(7).
PMID: 38613063 PMC: 11013586. DOI: 10.3390/nu16071030.