Chicken essence for cognitive function improvement: A systematic review and meta-analysis

Siew Li Teoh, Suthinee Sudfangsai, Pisake Lumbiganon, Malinee Laopaiboon, Nai Ming Lai, Nathorn Chaiyakunapruk

    Research output: Contribution to journalReview ArticleResearchpeer-review

    12 Citations (Scopus)

    Abstract

    Chicken essence (CE) is a popular traditional remedy in Asia, which is believed to improve cognitive functions. CE company claimed that the health benefits were proven with research studies. A systematic review was conducted to determine the cognitive-enhancing effects of CE. We systematically searched a number of databases for randomized controlled trials with human subjects consuming CE and cognitive tests involved. Cochrane’s Risk of Bias (ROB) tool was used to assess the quality of trials and meta-analysis was performed. Seven trials were included, where six healthy subjects and one subject with poorer cognitive functions were recruited. One trial had unclear ROB while the rest had high ROB. For executive function tests, there was a significant difference favoring CE (pooled standardized mean difference (SMD) of –0.55 (–1.04, –0.06)) and another with no significant difference (pooled SMD of 0.70 (–0.001, 1.40)). For short-term memory tests, no significant difference was found (pooled SMD of 0.63 (–0.16, 1.42)). Currently, there is a lack of convincing evidence to show a cognitive enhancing effect of CE.

    Original languageEnglish
    Article number57
    Number of pages23
    JournalNutrients
    Volume8
    Issue number1
    DOIs
    Publication statusPublished - 20 Jan 2016

    Keywords

    • Attention
    • Chicken essence
    • Chicken extract
    • Cognitive function
    • Executive function
    • Health claims
    • Nutritional product
    • Supplement

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