Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Casein protein is scientifically validated for supporting convalescence, particularly in contexts where muscle mass preservation and recovery are crucial. During convalescence—whether following illness, surgery, or trauma—maintaining or rebuilding lean body mass is a common clinical objective. Casein is a slow-digesting, high-quality protein derived from milk, providing all essential amino acids necessary for muscle protein synthesis. Several clinical studies have demonstrated that casein supplementation, especially when combined with resistance exercise or physical therapy, can help preserve or increase muscle mass in populations at risk of muscle wasting, such as the elderly, hospitalized patients, or those recovering from major illnesses.

Compared to other protein sources, casein’s slow digestion rate provides a sustained release of amino acids, which may be particularly advantageous in periods of prolonged fasting (such as overnight) common during convalescence. Systematic reviews and randomized controlled trials have shown that supplemental casein protein improves nitrogen balance and attenuates muscle loss during periods of immobilization or recovery. Clinical nutrition guidelines often recommend casein or similar high-quality proteins for patients in rehabilitation or recovery phases.

While more research could clarify optimal dosing and timing, the current scientific consensus supports the use of casein protein as an effective nutritional strategy to aid recovery and support muscle health during convalescence.

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