Marine protein, sourced from fish, crustaceans, or other marine organisms, is used to support convalescence based on scientific evidence. During recovery from illness or surgery, the body's protein requirements increase to repair tissues, support immune function, and prevent muscle wasting. Marine proteins are considered high-quality, complete proteins, providing all essential amino acids in proportions beneficial for human health.

Several clinical and nutritional studies have demonstrated that dietary protein supplementation, including marine-derived protein, can aid in faster recovery, improved wound healing, and maintenance of lean body mass during periods of convalescence. Marine proteins are also often rich in bioactive peptides, omega-3 fatty acids, and micronutrients, which may further enhance recovery through anti-inflammatory and immunomodulatory effects.

Notably, guidelines for nutritional support in hospitals frequently include fish and seafood as valuable protein sources. While most evidence does not single out marine protein as superior to other animal proteins, it is well established that adequate high-quality protein intake, including from marine sources, supports recovery in convalescent patients. Thus, the use of marine protein for convalescence is grounded in contemporary nutritional science rather than tradition alone.