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Concentrations of GHK-Cu in the body decline significantly with age, from approximately 200 ng/mL in young adults to under 80 ng/mL by age 60, making topical replenishment meaningful
A physician typically prescribes B12 shots for those who eat a diet that does not contain enough vitamin B12
human research : Most research has been conducted in rodents and small mammals, so it is not yet clear how these findings may translate to humans
it's the clinical expertise behind it
Nan KS, Karuppanan K, Kumar S
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