Cachexia is a common accompanying phenomenon of many chronic inflammatory diseases, tumors, AIDS, heart defects, rheumatoid arthritis, tuberculosis or cystic fibrosis. It is often seen in older people. Unlike classical fasting, resulting from low caloric intake, there is a loss of muscle mass during cachexia and cannot be compensated or reversed by increased food intake. Weight loss is common, but not required. Most cachectic people lose fat and muscle quickly, but weight can be compensated in some cases by increasing the amount of extracellular fluid. There are many opinions on how to treat cachexia. Cachexia is a side effect of a disease. It is therefore necessary to focus on the underlying disease, after its cure disappears cachexia. Or you can focus on cachexia with the right nutrition.