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Many adults dont get enough B12 through diet alone, especially if they follow a vegetarian or vegan lifestyle, have certain digestive conditions, or simply dont absorb nutrients as efficiently with age
KukaevEKirillovaETokarevaARimskayaEStarodubtsevaNChernukhaGet al
10.1523/jneurosci.4061-15.2016 40 MarshallG
HUBERMAN: Melanocyte-stimulating hormone has the effect of stimulating pigmentation of the skin by activating what are called melanocytes that exist within the skin
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