Cachexia: Unraveling its Complex Pathophysiology and Novel Therapeutic Approaches

Cachexia is a complex, multifactorial syndrome marked by progressive weight loss, muscle wasting, and metabolic disturbances. It presents significant challenges in clinical practice and contributes to 20% of all cancer-related deaths. While cachexia is commonly linked to cancer, it is also associated with a range of chronic conditions, including chronic heart failure, chronic kidney disease, and autoimmune disorders. Additionally, cachexia is not limited to cancer. Still, it can also occur in end-stage or chronic diseases such as AIDS, chronic obstructive pulmonary disease (COPD), rheumatoid arthritis, tuberculosis, and gastrointestinal diseases. This article aims to explore the intricate pathophysiological mechanisms underlying cachexia and discuss emerging therapeutic strategies for its management. This comprehensive review of the literature and clinical studies explores the intricate interactions between inflammation, disrupted metabolism, hormonal imbalances, and immune dysfunction in cachexia. Furthermore, this review highlights the importance of early detection and intervention in improving the devastating consequences of cachexia on patient outcomes. Finally, this review presents the latest advancements in therapeutic approaches, including pharmacological interventions, nutritional support, exercise regimens, and novel targeted therapies, while underscoring the need for multidisciplinary and personalized treatment strategies.