Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Casein protein is scientifically validated as a beneficial supplement for supporting recovery after surgery, primarily due to its high-quality, slow-digesting protein content. After surgical procedures, the body requires increased amounts of protein to promote tissue repair, immune function, and wound healing. Casein, a major protein found in milk, is rich in essential amino acids, particularly glutamine, which has a supportive role in immune health and tissue regeneration. Its slow digestion rate provides a sustained release of amino acids, which can be advantageous in maintaining a positive nitrogen balance and supporting muscle preservation during periods of reduced mobility or catabolic stress following surgery. Clinical studies have demonstrated that adequate protein intake, including from casein sources, reduces complications, supports recovery of muscle mass, and accelerates wound healing in post-surgical patients. For example, a review in Clinical Nutrition (2017) highlights that perioperative nutrition, especially with high-protein formulas, improves outcomes in surgical patients. While most research does not single out casein over other protein sources, its unique properties make it a preferred choice for overnight or prolonged amino acid delivery when patients may not be able to eat regularly. Overall, the use of casein protein in post-surgical nutrition is supported by scientific rationale and clinical evidence, though it is most effective when used as part of an overall adequate protein and energy intake.

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