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Normal blood levels of calcium are maintained even when dietary intake of calcium is inadequate because the skeleton provides a large reserve of the mineral
Science 301(5636):10991102 McClain MS, Beckett AC, Cover TL (2017) Helicobacter pylori vacuolating toxin and gastric cancer
For those focused on cellular repair and anti-aging benefits, NAD+ pairs beautifully with glutathione
Three things to remember: collagen peptides are the only option with robust human evidence, injectable peptides carry regulatory and safety considerations that oral collagen does not, and no peptide replaces proper medical evaluation for serious joint damage
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