Protein is essential for maintaining muscle mass, supporting immune function, tissue repair, metabolic processes, and recovery during illness. As a HCP, you are likely to encounter patient groups with increased protein needs, including older adults, critically ill patients, individuals with cancer, and those at risk of malnutrition. However, meeting protein requirements in clinical practice can often be challenging due to reduced appetite, anabolic resistance, illness-related catabolism, or difficulties achieving adequate intake through food alone. Emerging evidence highlights the importance of not only protein quantity, but also protein quality, amino acid composition, digestibility, and the timing of protein delivery in supporting recovery and functional outcomes. This page brings together practical resources designed to help you better understand evolving protein recommendations, protein quality in medical nutrition, and personalised approaches to protein support across different patient populations.