1 Introduction At present, depression has become a major mental illness worldwide ( Bifidobacterium ), and depressive symptoms is more directly measurable (e.g., via SCFA levels, neurotransmitter concentrations) than the vague association between overall diet and mood ( The gut-brain axisa bidirectional communication network involving the central nervous system (CNS), enteric nervous system (ENS), and gut microbiotaprovides a key framework for understanding nutrition-microbiota-depression interactions ( Bifidobacterium ) in depressed patients ( 2 Methods 2.1 Literature search strategy This review followed a systematic approach aligned with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines ( Search databases: a systematic search will be conducted across four major databases: PubMed, Web of Science Core Collection, Embase, and Cochrane Library

however, in exceptional circumstances, a substance or method may be added to the Prohibited List at any time
Its concentrated active ingredients work to brighten skin, promote collagen production, and enhance elasticity
PPI strategy plays an important role in the body for metabolic and signaling processes