Across 3 studies, all reported beneficial effects on reducing oxidative stress, with effect sizes ranging from small to moderate. The evidence base is very small (only 3 papers, all reviews or preclinical), and no studies provided statistically significant findings or consistent dosing information. Effects were predominantly small, though one animal study showed moderate effects from synbiotic supplementation.
Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. No statistically significant findings were reported. The studies include two general reviews and one animal model; no human trials are available. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed).
Phytoantioxidants such as polyphenols directly neutralize I/R-induced reactive oxygen species (ROS), which promote microvascular recovery and neuronal survival.
Lacocaseibacillus casei, Lactiplantibacillus plantarum, and Bifidobacterium bifidum mitigate CRC by lowering oxidative stress and lipid peroxidation
synbiotic supplementation enhanced antioxidant levels (SOD and GSH), decreased oxidants (MDA)