Targeting microbiota–gut–brain axis with phytochemicals: a mechanistic roadmap for dementia - Priya Manna; Shayeri Chatterjee Ganguly; Arup Chatterjee; Banani Mondal; Aditi Maity; Srijita Chatterjee; Tanmoy Guria; Mainak Chakraborty (Metabolic Brain Disease, 2026)