Synopsis

Source of validity: Scientific
Rating (out of 5): 5

Protein supplementation is scientifically validated for its role in supporting convalescence. During periods of recovery from illness, surgery, or trauma (convalescence), the body's metabolic demands are increased, especially for tissue repair, immune function, and the restoration of lean body mass. Numerous clinical studies have demonstrated that adequate dietary protein intake during convalescence helps mitigate muscle wasting, supports wound healing, and improves overall recovery outcomes. Protein provides essential amino acids required for the synthesis of new proteins, enzymes, and immune cells that are critical during the healing process. Guidelines from institutions such as the World Health Organization (WHO), the European Society for Clinical Nutrition and Metabolism (ESPEN), and the Academy of Nutrition and Dietetics recommend increased protein intake for convalescing individuals, often suggesting 1.2–2.0 g/kg/day depending on the severity of illness or injury. Randomized controlled trials and meta-analyses have shown that protein supplementation can decrease hospital stays, reduce complications, and improve functional recovery, especially in older adults and those recovering from surgery or critical illness. In summary, the use of protein to support convalescence is grounded in robust scientific evidence, with a high level of consensus among medical and nutritional experts.

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