Milk protein is scientifically validated as a supportive nutrient during convalescence, the period of recovery following illness or surgery. Protein is essential for tissue repair, immune function, and the maintenance of lean body mass, all of which are critical during recovery. Milk proteins, primarily casein and whey, are high-quality, complete proteins containing all essential amino acids in optimal proportions for human health. Several clinical studies have demonstrated that increased dietary protein, particularly from high biological value sources like milk, can help mitigate muscle wasting, promote faster recovery, and improve overall outcomes in convalescent patients. For example, research in elderly and hospitalized populations has shown that supplementing diets with milk protein can enhance muscle protein synthesis, support immune response, and decrease the risk of complications related to malnutrition.

Additionally, milk protein is easily digestible and generally well-tolerated, making it suitable for patients with reduced appetite or impaired digestion. Medical nutrition supplements often include milk protein for these reasons. While not exclusive to convalescence, the robust scientific evidence supporting the role of high-quality protein in recovery justifies its use in this context. No major clinical guidelines dispute its utility, and its inclusion is consistent with evidence-based practices for nutritional support during recovery from illness or surgery.