The “Diagnosis and treatment of diseases” section provides verified information on modern methods for detecting and treating various pathologies. We cover a wide range of areas: cardiology, oncology, endocrinology, neurology, infectious diseases, and much more. Here you will learn about the latest diagnostic protocols, including high-precision imaging methods, blood tests for genetic and biochemical markers, and minimally invasive procedures that allow for early detection of disease. We describe modern treatment approaches in detail: from targeted and immunotherapy in oncology to robotic surgery and new drugs. We also look at combined treatment, rehabilitation, and supportive care. Special attention is paid to preventive examinations and the importance of early detection of diseases. The publications will be useful for patients who want to understand the possible treatment options, as well as for medical professionals who follow the latest trends in clinical practice. Our goal is to make complex medical information understandable so that everyone can make informed decisions about their health based on reliable data and the experience of world-class clinics.