Animal protein is scientifically validated as supportive for muscle tone, particularly in the context of preventing or treating a lack of muscle tone (hypotonia or sarcopenia). Proteins from animal sources—such as meat, dairy, and eggs—are considered "complete proteins" because they contain all essential amino acids required for human health. Muscle tissue is primarily composed of protein, and adequate dietary intake is essential for muscle protein synthesis, maintenance, and repair.

Numerous clinical studies have shown that higher protein intake, especially from animal sources, can help preserve or increase muscle mass and improve muscle strength. This is particularly relevant in older adults, those recovering from illness or injury, or individuals with muscle-wasting diseases. For example, a review published in Current Opinion in Clinical Nutrition and Metabolic Care (2013) highlights that animal protein intake stimulates muscle protein synthesis more effectively than plant protein due to higher digestibility and a more favorable amino acid profile, particularly leucine, which plays a key role in muscle anabolism.

While animal protein is not a "treatment" for underlying neurological causes of hypotonia, it is a foundational nutritional element in supporting muscle health and preventing further deterioration. Thus, its use is supported by scientific evidence, especially in the context of dietary interventions to improve or maintain muscle tone.