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14 Headlines I t has long been believed that neurological diseases are confined to the brain, but recent research has shown they can also result from poor overall health within different parts of the body. The body and brain are interconnected, meaning that neglecting one’s physical health can have a negative impact on the brain, and vice-versa. Emerging evidence has shown that disturbances in the gut microbiome and gut inflammation can affect brain function and contribute to the development of neurological and psychiatric disorders through the gut- brain axis. The gut-brain axis refers to the bidirectional communication system between the gastrointestinal tract and the central nervous system. It involves multiple pathways such as hormonal, neural and immunological signals that help regulate physiological processes. The gut is also home to a complex community of microorganisms known as the gut microbiome, which can influence brain function through the gut-brain axis. Here at the University of Otago, I am part of a team studying the role of diet in Parkinson’s disease (PD). I am mentored by Professor Louise Parr-Brownlie who is extremely Always trust your gut Assistant Research Fellow Dr Elodie Kip on how looking after the ‘brain in your gut’ can help stave off neurological disease.