Sanism is discrimination and prejudice based on mental health, including assumptions about mental illness and neurodivergence. It manifests in various forms such as stigma, discrimination, and exclusion. Sanism highlights the tendency of societies or individuals to disregard individuals’ valuable contributions and experiences based on their mental health status and to focus instead on negative stereotypes and assumptions. This can profoundly impact individuals with mental health challenges, leading to feelings of shame, isolation, and a lack of understanding.