The invention relates to the field of medicine and nutrition, more specifically to the field of treatment and prevention of human disorders such as depression, rumination, aggression, migraine, autistic spectrum disorders (including autism and ADHD), schizophrenia, chronic fatique, kidney disorders, metabolic syndrome or diabetes type II. The invention provides a pharmaceutical or food composition or a supplement comprising a multispecies probiotic composition at least comprising Bifidobacterium bifidum W23 for use in the treatment or prevention of disorders in humans and methods to use such a pharmaceutical or food composition or a supplement.
