PubMed · 2026-02-18
Researchers propose that tiny particles naturally released by plants — called plant extracellular vesicles — can carry plant polyphenols (health compounds) into the body more effectively, potentially protecting the brain from damage caused by eating too many processed, high-heat foods. The gut-brain connection is the key pathway.
Excessive dietary AGEs (advanced glycation end products, common in processed and high-heat-cooked foods) disrupt gut barrier integrity and microbiota balance, creating a pathway to neuroinflammation and oxidative stress in the brain.
Plant extracellular vesicles (PEVs) act as natural nanocarriers that significantly enhance the bioavailability of polyphenols compared to free polyphenol intake.
PEV-polyphenol delivery systems demonstrate synergistic antioxidant, anti-inflammatory, and gut microenvironment-modulating effects that may collectively protect the microbiota-gut-brain axis.