Research published in Proceedings of the Nutrition Society (2007; Volume 66) reported that supplementation with prebiotics and probiotics may improve antioxidant status. Prebiotics are compounds that nourish existing beneficial gut bacteria, such as fructo-oligosaccharides, while probiotics supply live, beneficial microorganisms directly.
Antioxidant status reflects the body’s ability to protect itself against oxidative stress—a process linked with cellular damage and inflammation. Oxidative stress can be influenced by environmental exposures and dietary factors and has been linked with a range of health concerns, including cardiovascular disease, cancer, and persistent fatigue. Many of these stressors promote the formation of free radicals, unstable molecules with unpaired electrons that can interact with and damage tissues. Antioxidants help neutralize these molecules, limiting their potential to disrupt normal cellular function. Oxidative stress can be evaluated by measuring specific biomarkers in the body.
The study used a double-blind, placebo-controlled design. One group received maltodextrin as a placebo, while the other group received a combination of prebiotics and probiotics for three weeks. Participants receiving the supplemented combination showed improvements in biomarkers associated with oxidative stress compared to the placebo group.
These findings suggest that supporting the gut microbiome may influence the body’s antioxidant defenses, highlighting another possible link between digestive health and systemic balance.
