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Chicken Essence for Cognitive Function Improvement: A Systematic Review and Meta-Analysis.
Siew Li Teoh1, Suthinee Sudfangsai2, Pisake Lumbiganon3
1School of Pharmacy, Monash University Malaysia, Selangor 47500, Malaysia. charmaine.slteoh@gmail.com.
Nutrients
|January 26, 2016
Summary
Chicken essence (CE) shows no convincing evidence for improving cognitive function. This systematic review found high risk of bias in most studies, questioning its claimed benefits.
Area of Science:
- Neuroscience
- Pharmacology
- Traditional Medicine
Background:
- Chicken essence (CE) is a popular Asian remedy claimed to enhance cognitive functions.
- Manufacturers assert that research validates CE's health benefits.
Purpose of the Study:
- To systematically review randomized controlled trials assessing the cognitive-enhancing effects of CE in humans.
- To evaluate the quality of existing research on CE and cognitive performance.
Main Methods:
- Systematic literature search for randomized controlled trials involving CE consumption and cognitive testing.
- Quality assessment of included trials using the Cochrane Risk of Bias tool.
- Meta-analysis to pool effect sizes for cognitive outcomes.
Main Results:
- Seven trials were included, mostly with healthy participants; one trial involved subjects with poorer cognitive function.
- Most trials exhibited high risk of bias, limiting the reliability of findings.
- Meta-analysis showed mixed results for executive functions and no significant effect on short-term memory.
Conclusions:
- Current evidence for CE's cognitive-enhancing effects is not convincing due to the low quality of available studies.
- Further high-quality randomized controlled trials are needed to definitively assess CE's impact on cognition.
