Synopsis

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

Animal tissue, particularly in the form of dietary protein derived from sources such as meat, poultry, and fish, has scientific validation for its role in supporting the muscular system. Numerous studies indicate that dietary proteins provide essential amino acids required for muscle protein synthesis, maintenance, and repair. For example, research published in journals such as The American Journal of Clinical Nutrition demonstrates that animal-based proteins are typically complete proteins, meaning they contain all essential amino acids in proportions optimal for human muscle growth and maintenance. Furthermore, animal tissues such as collagen from connective tissue are increasingly studied for their potential to support muscle and connective tissue health, especially in the context of recovery from injury or intensive exercise.

However, the evidence does not suggest that consuming animal tissue in any specialized or isolated form (e.g., organ extracts or "tissue supplements") directly enhances muscle strength or function beyond what is provided by adequate dietary protein intake. The primary mechanism remains nutritional—supplying building blocks for muscle tissue rather than directly supporting muscle function. Therefore, the strength of evidence is moderate, as the benefits are well-documented in the context of general nutrition, but not as a unique or pharmacological intervention specific to the muscle system.

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