This book, 'Nutrition et Sant́e Mentale', explores the critical connection between physical and mental health, emphasizing often-overlooked aspects in specialized fields. Aimed at enriching the education of nutritionists and healthcare professionals, it focuses on specific interventions for individuals with mental disorders. Through fictional case studies, it illustrates clinical nutrition practices and highlights theoretical approaches, emphasizing the importance of trust, collaboration, and patient autonomy in lifestyle changes. The authors, Jeanne B́edard, Marie-Chantal Bienvenu, and Yves Morel, bring their clinical expertise to offer a comprehensive guide that values social justice and access to care. The book is a valuable resource for both healthcare practitioners and their patients, advocating for a holistic approach that integrates mental and physical well-being.