Evidence supporting the use of: Vitamin (unspecified)
For the health condition: Body Building

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Synopsis

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

Vitamins are commonly used in bodybuilding to support various physiological processes essential for muscle growth, recovery, and overall performance. Scientific evidence supports the role of several vitamins—particularly vitamin D, the B vitamins, vitamin C, and vitamin E—in muscle function, energy metabolism, and recovery. For example, vitamin D is known to play a role in muscle protein synthesis and strength, with deficiency linked to impaired muscle function. B vitamins (such as B6, B12, and folate) are crucial for energy production and red blood cell formation, supporting oxygen delivery to working muscles during intense training. Antioxidant vitamins like C and E help mitigate oxidative stress generated during strenuous exercise, potentially reducing muscle damage and supporting recovery.

However, the evidence for direct performance enhancement from vitamin supplementation in individuals who are not deficient is mixed. Most studies suggest that adequate intake—rather than high-dose supplementation—is key, as excessive vitamin use does not confer additional benefits and may sometimes be detrimental. In summary, while vitamins are scientifically validated as essential for optimal muscle function and recovery, they are most beneficial for bodybuilding when correcting deficiencies or maintaining adequate levels, rather than as ergogenic aids in already well-nourished individuals.

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