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Animal and laboratory studies have suggested that some of these peptides can influence blood vessel formation which from an injury perspective, can indicate healing fibroblast activity, collagen production, reduce inflammation, and improve the healing response in the things that were most interested in from a sports medicine and surgery perspective: tendons, ligaments, muscles, cartilage, and other tissues, Frank said

There are groups of people that can especially benefit from regular B12 injections, including those sporting a vegetarian or vegan diet who do not normally eat animal foods like meat, egg, or dairy products

That's the gold standard