Diabetes & Metabolism Journal

Original Article

Others
Assessing Nutritional Factors for Metabolic Dysfunction-Associated Steatotic Liver Disease via Diverse Statistical Tools: Yea-Chan Lee, Hye Sun Lee, Soyoung Jeon, Yae-Ji Lee, Yu-Jin Kwon, Ji-Won Lee; Received January 9, 2025 Accepted March 19, 2025 Published online June 9, 2025; DOI: https://doi.org/10.4093/dmj.2025.0026 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Lifestyle modifications are critical in addressing metabolic dysfunction-associated steatotic liver disease (MASLD); however, the specific macronutrients that most significantly influence the disease’s progression are uncertain. In this study, we aimed to explore the role of carbohydrate, fat, and protein intake in MASLD development using decision trees, random forest models, and cluster analysis.
Methods
Participants (n=3,951) from the Korean Genome and Epidemiology Study were included. We used the classification and regression tree analysis to classify participants into subgroups based on variables associated with the incidence of new-onset MASLD. Random forest analyses were used to assess the relative importance of each variable. Participants were grouped into homogeneous clusters based on carbohydrate, protein, fat, and total caloric intake using hierarchical cluster analysis. Subsequently, we used the Cox proportional hazards regression models to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) for MASLD risk across the clusters.
Results
Carbohydrate intake was identified as the most significant predictor of new-onset MASLD, followed by fat, protein, and total caloric intake. Participants in cluster 3, who consumed a lower proportion of carbohydrate but had higher total caloric, protein, and fat intake, had a lower risk of new-onset MASLD than those in cluster 1 after adjusting for confounders (cluster 1 as a reference; cluster 3: HR, 0.90; 95% CI, 0.82 to 0.99).
Conclusion
The study’s results highlight the critical role of macronutrient composition, particularly carbohydrate intake, in MASLD development. The findings suggest that dietary strategies focusing on optimizing macronutrients, rather than simply reducing caloric intake, may be more effective in preventing MASLD.

Review

Guideline/Fact Sheet
Comprehensive Understanding for Application in Korean Patients with Type 2 Diabetes Mellitus of the Consensus Statement on Carbohydrate-Restricted Diets by Korean Diabetes Association, Korean Society for the Study of Obesity, and Korean Society of Hypertension: Jong Han Choi, Jee-Hyun Kang, Suk Chon; Diabetes Metab J. 2022;46(3):377-390. Published online May 25, 2022; DOI: https://doi.org/10.4093/dmj.2022.0051

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The Joint Committee of the Korean Diabetes Association, the Korean Society for the Study of Obesity, and the Korean Society of Hypertension announced a consensus statement on carbohydrate-restricted diets and intermittent fasting, representing an emerging and popular dietary pattern. In this statement, we recommend moderately-low-carbohydrate or low-carbohydrate diets, not a very-low-carbohydrate diet, for patients with type 2 diabetes mellitus. These diets can be considered a dietary regimen to improve glycemic control and reduce body weight in adults with type 2 diabetes mellitus. This review provides the detailed results of a meta-analysis and systematic literature review on the potential harms and benefits of carbohydrate-restricted diets in patients with diabetes. We expect that this review will help experts and patients by fostering an in-depth understanding and appropriate application of carbohydrate-restricted diets in the comprehensive management of diabetes.

Citations

Citations to this article as recorded by

The effects of low-carbohydrate diet on glucose and lipid metabolism in overweight or obese patients with T2DM: a meta-analysis of randomized controlled trials
Wende Tian, Shuyu Cao, Yongxin Guan, Zihao Zhang, Qiyu Liu, Jianqing Ju, Ruixi Xi, Ruina Bai
Frontiers in Nutrition.2025;[Epub] CrossRef
Efficacy of convenience meal-type foods designed for diabetes in the management of metabolic syndrome based on a 3-week trial
Do Gyeong Lee, In Gyeong Kang, Tae Seok Kim, Yun Ahn, Sang Yun Lee, Hye Jin Ahn, Yoo Kyoung Park
Nutrition.2024; 118: 112287. CrossRef
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Ashley Berthoumieux, Sarah Linke, Melinda Merry, Alison Megliola, Jessie Juusola, Jenna Napoleone
The Science of Diabetes Self-Management and Care.2024; 50(1): 19. CrossRef
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Original Article

Lifestyle
Reducing Carbohydrate from Individual Sources Has Differential Effects on Glycosylated Hemoglobin in Type 2 Diabetes Mellitus Patients on Moderate Low-Carbohydrate Diets: Hajime Haimoto, Shiho Watanabe, Keiko Maeda, Takashi Murase, Kenji Wakai; Diabetes Metab J. 2021;45(3):390-403. Published online July 21, 2020; DOI: https://doi.org/10.4093/dmj.2020.0033

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186 Download
4 Web of Science
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Graphical Abstract Abstract PDF Supplementary Material PubReader ePub

Background

We evaluated decreases in glycosylated hemoglobin (HbA1c) achieved by reducing carbohydrate from various sources in type 2 diabetes mellitus patients.

Methods

We followed up 138 male and 107 female outpatients on a moderate low-carbohydrate diet without diabetic medication for 6 months. Changes in carbohydrate sources (Δcarbohydrate) were assessed from 3-day dietary records at baseline and 6 months, and associations with changes in HbA1c (ΔHbA1c) were examined with Spearman's correlation coefficients (r_s) and multiple regression analysis.

Results

ΔHbA1c was −1.5%±1.6% in men and −0.9%±1.3% in women, while Δtotal carbohydrate was −115.3±103.7 g/day in men and −63.6±71.1 g/day in women. Positive associations with ΔHbA1c were found for Δtotal carbohydrate (r_s=0.584), Δcarbohydrate from soft drinks (0.368), confectionery (0.361), rice (0.325), bread (0.221), Chinese soup noodles (0.199) in men, and Δtotal carbohydrate (0.547) and Δcarbohydrate from rice (0.376) and confectionery (0.195) in women. Reducing carbohydrate sources by 50 g achieved decreases in HbA1c of 0.43% for total carbohydrate, 1.33% for soft drinks, 0.88% for confectionery, 0.63% for bread, 0.82% for Chinese soup noodles and 0.34% for rice in men and 0.45% for total carbohydrate, 0.67% for confectionery and 0.34% for rice in women, although mean reductions in carbohydrate from these sources were much smaller than that from rice.

Conclusion

Decreases in HbA1c achieved by reducing carbohydrate from soft drinks, confectionery, bread and Chinese soup noodles were 2- to 4-fold greater than that for rice. Our results will enable patients to decrease HbA1c efficiently (UMIN000009866).

Citations

Citations to this article as recorded by

Letter: Post‐HCV Cure, Precision Assessment of Liver Stiffness and Diabetes Risk in Maternal Populations—A Critical Research Need
Zihe Guan, Yang Liu, Xinming Chen, Xiwei Yang
Alimentary Pharmacology & Therapeutics.2025;[Epub] CrossRef
Exploring diet associations with Covid-19 and other diseases: a Network Analysis–based approach
Rashmeet Toor, Inderveer Chana
Medical & Biological Engineering & Computing.2022; 60(4): 991. CrossRef
Comprehensive Understanding for Application in Korean Patients with Type 2 Diabetes Mellitus of the Consensus Statement on Carbohydrate-Restricted Diets by Korean Diabetes Association, Korean Society for the Study of Obesity, and Korean Society of Hyperte
Jong Han Choi, Jee-Hyun Kang, Suk Chon
Diabetes & Metabolism Journal.2022; 46(3): 377. CrossRef
Associations of Dietary Salt and Its Sources with Hemoglobin A1c in Patients with Type 2 Diabetes Not Taking Anti-Diabetic Medications: Analysis Based on 6-Month Intervention with a Moderate Low-Carbohydrate Diet
Hajime Haimoto, Takashi Murase, Shiho Watanabe, Keiko Maeda, Kenji Wakai
Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy.2021; Volume 14: 4569. CrossRef

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