To understand the changes in body composition with ageing; To know the prevalence of undernutrition according to the subject's life setting; To know the factors contributing to undernutrition in the elderly; To know the main medical consequences of undernutrition; To know that elderly subjects are at risk for micronutrient deficiency; To know the recommended strategies for screening and assessing undernutrition; To know when and how to use nutritional supplements, and the results of this supplementation; To know the most frequent indications for artificial nutrition in the elderly; To know the techniques and outcome; To know the indications and results in specific clinical situations; To understand the need for ethical elements alongside the medical ones in deciding upon starting an elderly patient on artificial nutrition. Improvement of competencies and skills in CN, application of effective CN in the treatment of disease and health promotion; To acquire tools to interpret new scientific information, genetic predisposition and link with nutrition, better practical management of nutritional support. To understand sarcopenia, its causes, consequences, screening and interventions.