Protein Requirements and Supplementation for Malnourished Patients

Introduction to Protein Requirements

High-quality protein sources providing at least 1.2-1.5 g/kg/day of protein should be the standard for treating malnutrition in both hospital and outpatient settings, with oral nutritional supplements (ONS) containing at least 30g of protein daily being particularly effective when dietary intake alone is insufficient 1, 2
Protein requirements for malnourished patients are significantly higher than standard recommendations, ranging from 1.2-1.5 g/kg/day for most adults with malnutrition 2, 3

In certain conditions such as cancer, protein intake should be above 1 g/kg/day and ideally up to 1.5 g/kg/day to promote muscle protein anabolism 4
For patients with cirrhosis, protein intake of 1.2-1.5 g/kg/day is recommended as it is safe, does not worsen hepatic encephalopathy, and minimizes protein loss 3
Older adults with malnutrition should receive at least 30g of protein daily through ONS when dietary intake is insufficient 1, 5

ONS should be offered to hospitalized patients with malnutrition when they cannot meet nutritional goals through diet alone 1
High-protein ONS (>20% of energy from protein) are particularly beneficial for malnourished patients 1
ONS should provide at least 400 kcal/day including 30g or more of protein/day for optimal effectiveness 1, 5
A diverse range of protein sources is recommended, including both animal and plant-based options 3

Cancer patients should receive protein intake above 1 g/kg/day, ideally up to 1.5 g/kg/day 4
Patients with cirrhosis should receive 1.2-1.5 g/kg/day of protein from diverse sources 3
Patients with Inflammatory Bowel Disease (IBD) should be co-managed with a registered dietitian to ensure adequate protein intake 7
Hypoalbuminemia should not be used as the sole marker for protein malnutrition, as it is affected by inflammation and other non-nutritional factors 8, 7