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Nicotinamide-N-methyltransferase controls behavior, neurodegeneration and lifespan by regulating neuronal autophagy
Using biotin has been shown to improve brittle nail syndrome, but its believed that biotin deficiency may not actually be the cause, Romito says
Sterile water for injection contains no preservative and is single-use only, while bacteriostatic water contains 0.9% benzyl alcohol that inhibits microbial growth across multiple punctures
Arthur Heller, HealthTap There is also the risk of bacterial contamination, which increases as the B12 ages
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