Cachexia *	Weight loss characterized by a continuous decline in skeletal muscle mass, with or without fat loss. Currently, consensus exist that cachexia (of cancer and chronic diseases) should be considered a form of disease-related malnutrition with inflammation. **
Malnutrition *	A state resulting from lack of intake or uptake of nutrition that leads to altered body composition (decreased fat free mass) and body cell mass leading to diminished physical and mental function and impaired clinical outcome from disease. **
Sarcopenia *	A progressive and generalized skeletal muscle disorder that is associated with increased likelihood of adverse outcomes including falls, fractures, physical disability, and mortality. ***
Low muscle mass/Low muscularity *	Weakening, shrinking, and loss of muscle mass caused by disease or lack of use resulting in decreased strength and ability to move.
* For an in-depth discussion of these terms, please refer to [77] Prado et al. Clin Nutr. 2022;41(10):2244-2263. ** [78] Cederholm T, Barazzoni R, Austin P, et al. ESPEN guidelines on definitions and terminology of clinical nutrition. Clin Nutr. 2017; 36:49-64. *** [79] Cruz-Jentoft AJ, Bahat G, Bauer JM, et al. Sarcopenia: revised European consensus on definition and diagnosis. Age and Ageing. 2019; 48,16-31.