Prebiotics supplementation
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Prebiotics Supplementation: Effects on Gut Microbiome and Metabolic Health
Prebiotics and Gut Microbiota Modulation
Prebiotics, such as inulin-type fructans and galacto-oligosaccharides, are non-digestible fibers that selectively promote the growth of beneficial gut bacteria, especially Bifidobacteria, leading to improved gut health and immune modulation . Supplementation with prebiotics has been shown to significantly alter the gut microbiome in both adults and children, increasing the abundance of beneficial bacteria and changing the profile of short-chain fatty acids (SCFAs) produced in the gut 356. Maternal prebiotic supplementation during pregnancy and lactation can also favorably modify the microbiome of both mother and infant, suggesting a role in early-life health programming .
Metabolic Benefits of Prebiotic Supplementation
Prebiotic supplementation has demonstrated several metabolic benefits. In adults, it is associated with increased satiety, reduced postprandial glucose and insulin concentrations, and subjective improvements in appetite control . In children with overweight and obesity, prebiotics improved feelings of fullness and reduced energy intake, particularly in older children, and showed a trend toward reducing BMI z-scores . In patients with nonalcoholic fatty liver disease (NAFLD), prebiotic supplementation improved liver enzymes, lipid profiles, and markers of insulin resistance, as well as reduced body mass index (BMI) 410. However, the effects on other metabolic and inflammatory markers remain inconsistent across studies .
Prebiotics, Bone Health, and Vitamin D Absorption
Emerging evidence suggests that prebiotic supplementation may enhance bone health by improving the absorption of vitamin D and positively influencing biomarkers of bone metabolism. In postmenopausal women with osteopenia, prebiotic oligosaccharides added to supplements led to significant improvements in vitamin D levels and bone turnover markers compared to supplements without prebiotics .
Prebiotics in Gastrointestinal Disorders
Prebiotics have shown promise in modulating gut bacteria and reducing symptoms in gastrointestinal disorders such as irritable bowel syndrome (IBS) when used at low doses, though higher doses may not provide additional benefits and could worsen symptoms . In enteral nutrition, fiber supplementation (including prebiotics) helps reduce diarrhea in stable patients, but the effect of prebiotics alone on diarrhea is inconclusive .
Prebiotics and Mental Health
While disturbances in gut microbiota are linked to depression, prebiotic supplementation did not significantly improve depression scores in patients with major depressive disorder compared to placebo, unlike probiotics which showed a benefit .
Conclusion
Prebiotic supplementation can beneficially modulate the gut microbiome, improve satiety, and support metabolic health, particularly in populations at risk for obesity and metabolic disorders. There is also potential for benefits in bone health and early-life microbiome development. However, effects on gastrointestinal symptoms and mental health are less clear, and more research is needed to determine optimal types, doses, and durations of prebiotic interventions for specific health outcomes 1234+6 MORE.
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