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[Research development on relation between equol and soy foods health effect]
Baohua Liu1, Liqiang Qin, Peiyu Wang
1Department of Social Medicine & Health Education, School of Public Health, Peking University, Beijing 100191, China. baohualiu@bjmu.edu.cn
Wei Sheng Yan Jiu = Journal of Hygiene Research
|March 1, 2011
Summary
Human gut bacteria metabolize soy to produce equol, a compound linked to reduced cancer risk and improved bone health in some individuals. Factors influencing equol production require further study for health applications.
Area of Science:
- Microbiology
- Human Physiology
- Nutritional Science
Background:
- Human intestinal bacteria metabolize soy isoflavones into equol and O-desmethylangolensin.
- Equol production capability varies among humans (30%-55%), influenced by gut microbiota composition.
- Individual differences in equol production are potentially linked to gut physiology, host genetics, and dietary factors.
Purpose of the Study:
- To explore the factors influencing the human capacity for equol production from soy.
- To investigate the health implications of equol production, including associations with cancer risk and bone health.
Main Methods:
- Literature review of studies on human intestinal bacteria and soy metabolism.
- Analysis of existing research on factors affecting equol production.
- Synthesis of findings from epidemiological and supplementation studies related to equol and health outcomes.
Main Results:
- Soybean metabolism by specific gut bacteria yields equol, with variable prevalence in humans.
- Potential health benefits of equol include inverse associations with breast and prostate cancer risk.
- Equol-producing individuals may experience greater benefits from soy supplementation for bone density maintenance.
Conclusions:
- Factors influencing equol production require further elucidation.
- The relationship between equol and human health warrants continued investigation for therapeutic and preventative strategies.
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