[Context, issues and perspectives of nutrition in hospitals].

Undernutrition is common in hospitals, and it worsens the vital and functional prognosis of patients. The earlier it is treated, the more effective it is. The prevention, detection, treatment and monitoring of undernutrition or the risk of undernutrition are a public health priority, which directly involves all carers. Management can be improved by their daily collaboration with a transversal nutrition unit.