Clinical Nutrition Research

"Mijoo Choi"

Original Article

Toward a longevity diet framework: integrating global evidence for healthy aging in the South Korean population: Soyoung Jung, Hae Jin Kang, Mijoo Choi, Yoo Kyoung Park; Clin Nutr Res 2026;15(2):91-100. Published online April 30, 2026; DOI: https://doi.org/10.7762/cnr.2026.0015

Abstract
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Objective

As global life expectancy rises, the focus has shifted from longevity alone to healthy aging. Although dietary models such as the Mediterranean, Dietary Approaches to Stop Hypertension (DASH), Mediterranean-DASH Intervention for Neurodegenerative Delay, and EAT-Lancet diets show benefits for specific health outcomes, their direct application to South Korean populations is limited by differences in dietary patterns and cultural practices. This study aimed to develop nutritional criteria for a South Korean-adapted longevity diet framework. Methods: A multiphase development approach was used, including a narrative review of major dietary models and clinical nutrition guidelines to identify key components of a longevity diet. Macronutrient distribution, food group intake, and nutrient-specific recommendations were synthesized into a structured framework. The EAT-Lancet reference diet was adjusted from 2,400 to 2,000 kcal/ day to reflect energy requirements of South Korean adults. Results: The proposed framework comprises six domain-specific recommendations, including macronutrient targets of 50%–65% carbohydrates, 10%–20% protein, and 15%–30% fat, with a 1:1 animal to plant protein ratio. Food group recommendations were tailored to South Korean dietary patterns. The framework addresses weight management, glycemic control, cardiovascular health, cognitive function, muscle function, and skin health. It emphasizes whole grains, dietary fiber, plant-based proteins, and unsaturated fats, while limiting refined carbohydrates, added sugars, and saturated fats. Conclusion: This study presents evidence-based nutritional criteria for a South Korean-adapted longevity diet framework that integrates disease prevention with functional health support to promote healthy aging.

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Review Article

The Role of Some Vitamins in Respiratory-related Viral Infections: A Narrative Review: Jae-Hee Park, Yunjung Lee, Mijoo Choi, Eunju Park; Clin Nutr Res 2023;12(1):77-89. Published online January 31, 2023; DOI: https://doi.org/10.7762/cnr.2023.12.1.77

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This study aimed to find out the effect of vitamins on respiratory-related viral infections, including coronavirus disease 2019 (COVID-19), through the literature reviews. From January 2000 to June 2021, the studies (cohort studies, cross-sectional studies, case-control studies, randomized control trials) related to vitamins (vitamin A, D, E, C, B₆, folate, and B₁₂) and COVID-19/severe acute respiratory syndrome/Middle East respiratory syndrome/cold/influenza were selected from the PubMed, Embase, and Cochrane libraries and analyzed. The relationship between vitamins and virus-related respiratory diseases was identified. Through the review, 39 studies were selected on vitamin D, one study on vitamin E, 11 studies on vitamin C, and 3 studies on folate. Regarding COVID-19, 18 studies on vitamin D, 4 studies on vitamin C, and 2 studies on folate showed significant effects of the intake of these nutrients in preventing COVID-19. Regarding colds and influenza, 3 studies on vitamin D, 1 study on vitamin E, 3 studies on vitamin C, and 1 study on folate demonstrated that the intake of these nutrients significantly prevents these diseases. Therefore, this review suggested the intake of vitamins D, E, C, and folate is important for preventing respiratory diseases related to viruses, such as COVID-19, colds, and influenza. The relationship between these nutrients and virus-related respiratory diseases should be continuously monitored in the future.

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