By Tarun Sai Lomte Reviewed by Susha Cheriyedath, M.Sc. Jan 26 2026 A large cohort study suggests that not all olive oils are equal, with virgin olive oil showing favorable links to cognitive aging and gut microbiota profiles over two years. Study: Total and different types of olive oil consumption, gut microbiota, and cognitive function changes in older adults . Image Credit: Mehes Daniel / Shutterstock In a recent study published in the journal  Microbiome , researchers examined the