What question did this study set out to answer?

To explore the relationship between dietary protein and amino acid intakes and their association with disability-adjusted life years (DALYs).

February 19, 2026Journal of Health Population and Nutrition0 citationsOpen Access

Association of dietary protein and amino acid intakes with all-cause disability-adjusted life years: cross-sectional analysis of the national health and nutrition survey in Japan

KIKazuko ISHIKAWA-TAKATATokyo University of Agriculture KFKazuki FujiwaraAjinomoto (Japan)TTT TanakaAjinomoto (Japan)

Key Points

To explore the relationship between dietary protein and amino acid intakes and their association with disability-adjusted life years (DALYs).
Cross-sectional analysis using data from the National Health and Nutrition Survey
Focus on dietary protein and amino acid intakes
Population includes men
Higher intake of plant protein correlated with lower DALYs in men
Specific amino acids like cysteine and phenylalanine showed similar patterns
Indicates adequate plant protein might extend healthy life expectancy

Abstract

Higher intakes of plant protein, cysteine, phenylalanine, glutamic acid, and proline were correlated with lower DALYs in men only. Adequate plant protein and specific amino acid intakes may be related to the extension of healthy life expectancy.

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