Diet quality concept

Ala'a Alkerwi*

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    122 Citations (Scopus)


    The term diet quality has recently gained considerable attention in nutritional research. Despite widespread use, it is often poorly defined and remains difficult to measure. Confusion surrounds the term, as there is no consensus on how to define quality of the diet or to pin down a framework for producing a standard indicator. The composite and cut-off selection of most diet quality indices depend on investigator choices in line with research objectives. In addition to the frequently used dietary compliance-based approach, innovative approaches have emerged to construct diet quality indices based on antioxidant and anti-inflammatory profiles of diet. Different viewpoints and overlapping interests may yield different interpretations. Most of the unresolved issues are related directly or indirectly to the multidimensional and open-textured nature of the concept.This review aims to elucidate several debated key points to understand the reasons behind this confusion and address the complexity of how to define and quantify this concept. A standardized and well-defined framework of diet quality is of great importance for both consumers and scientists from different disciplines.

    Original languageEnglish
    Pages (from-to)613-618
    Number of pages6
    Issue number6
    Publication statusPublished - Jun 2014


    • Concept
    • Diet quality
    • Multidimensionality
    • Review


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