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At 20 years, the average concentration of GHK-Cu of 200 ng/mL declines to 80 ng/mL by 60 years
In research models, this inhibition indirectly preserves NAD by reducing methylation of nicotinamide, and also maintains SAM levels an effect precursors do not address
They concluded that B12 accumulation in the placenta may represent an important factor in providing sufficient amount of this essential nutrient to the fetus (Giugliani, 1985). Due to a lack of clinical trials and case reports examining non-daily doses of B12 in pregnant or breastfeeding women, perhaps non-daily injections can provide some insight
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Dehydration can cause dark, concentrated yellow urine
Extrapolating from B12 supplementation trials of non-vegans to determine the needs of vegans is complicated by the fact that a high percentage of any small dose of B12 is absorbed and omnivores are normally receiving numerous small doses throughout the day
