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Home > Online-first > Ohia

Harnessing Probiotics as a Nexus of Food Safety, Public Health, and Environmental Sustainability

Chinenyenwa M.D. Ohia, Olutayo I. Falodun, Chinyere C. Ezemba

Abstract

Probiotics, defined as live microorganisms, provide health advantages when ingested in sufficient quantities. They have progressed from Élie Metchnikoff’s early hypothesis of lactic acid bacteria promoting longevity to a scientifically grounded field spanning clinical, nutritional, and environmental domains. Traditionally associated with Lactobacillus, Bifidobacterium, probiotics now include strains of Bacillus, Pediococcus, and Saccharomyces boulardii, expanding their functional repertoire. Contemporary evidence highlights their roles not only in maintaining gastrointestinal balance but also in allergy management, metabolic regulation, skin health, and modulation of the gut–brain axis. These benefits are mediated through immune modulation, enhancement of intestinal barrier function, and support of microbial diversity. Despite this progress, several challenges remain unresolved, including strain-specific variability, inconsistent efficacy across populations, and safety considerations in vulnerable groups. Additionally, fragmented global regulatory frameworks limit standardization of claims, labeling, and clinical adoption, while the ecological implications and sustainability of large-scale probiotic production are emerging concerns. This review provides a structured synthesis of probiotics in four domains: natural and engineered sources, mechanisms of action, contributions to human health, and broader implications for food safety, public health, and environmental sustainability. Integrating classical insights with recent advances highlights the promise of probiotics as broad-spectrum tools for preventive and therapeutic health. Looking forward, developments in microbiome science, bioengineering, and personalized nutrition offer opportunities to refine probiotic applications. Systematic attention to regulatory harmonization, safety, and sustainability will be critical to unlocking their full potential as cornerstones of modern health strategies.

 Keywords

environmental sustainability; food safety; one health; probiotics, public health

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DOI: http://dx.doi.org/10.31584/jhsmr.20261394

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About The Authors

Chinenyenwa M.D. Ohia
Department of Environmental Health Sciences, Faculty of Public Health, College of Medicine, University of Ibadan, Queen Elizabeth II Road, Agodi 200285, Ibadan, Oyo State 200284, Nigeria. Nanobios Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT), Bombay, 400076,
Nigeria

Olutayo I. Falodun
Department of Microbiology, University of Ibadan, Ibadan, Oyo State 200284,
Nigeria

Chinyere C. Ezemba
Chychy Gilgal Laboratory and Consulting Services Ichida, Anambra State 422012,
Nigeria

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Keywords COVID-19 SARS-CoV-2 Thailand Vietnam adolescent anxiety children depression diabetes diabetes mellitus elderly knowledge mental health mortality older adults prevalence quality of life reliability risk factors treatment validity
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