A therapist is a trained professional who provides therapy — treatment aimed at relieving or curing physical or psychological disorders. The word covers many disciplines: physiotherapists restore movement, occupational therapists rebuild daily-life skills, speech and language therapists treat swallowing and communication, psychotherapists treat mental health, and dietitians or nutritional therapists advise on therapeutic diets. What unites them is structured, evidence-based treatment delivered through a professional relationship, with assessment, a treatment plan, and review. In food-related health, therapists are central to eating-disorder treatment, dysphagia management, and rehabilitation after stroke or surgery, where relearning to eat safely is part of recovery.