Evidence supporting the use of: Fish (including shell)
For the health condition: Muscle Tone (lack of)

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Synopsis

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

Fish and shellfish are recognized sources of high-quality protein and essential nutrients, including omega-3 fatty acids, vitamin D, iodine, selenium, and various B vitamins. Scientific studies have shown that adequate dietary protein is crucial for the maintenance of muscle mass and function, which directly relates to muscle tone, especially in populations at risk of muscle loss, such as older adults. Fish proteins are considered complete, containing all essential amino acids needed for muscle protein synthesis. Additionally, omega-3 fatty acids, particularly EPA and DHA found in fatty fish, have been demonstrated in several clinical trials and meta-analyses to enhance the anabolic response of muscle to protein intake and resistance exercise, potentially mitigating age-related declines in muscle mass and strength (sarcopenia). Shellfish also provides bioavailable nutrients that support neuromuscular function. While fish and shellfish are not a treatment for medical causes of hypotonia (pathologically low muscle tone), their role in supporting healthy muscle structure and function is scientifically substantiated, particularly through nutritional pathways. However, they are not a replacement for medical interventions when muscle tone issues are due to neurological or genetic disorders. Therefore, the evidence supports dietary fish and shellfish as beneficial for maintaining or improving muscle tone, primarily through their protein and nutrient content, but not as a standalone treatment for clinical hypotonia.

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