whats better b12 injections or pills 6 best vitamin supplements 2026, according to an expert what is better b12 injections
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Puberty During puberty, your body is still learning how to manage its hormones
Your body needs it for healthy nerves, making DNA, and forming red blood cells
Most long-term protocols settle at 12 mg per day because the doseresponse curve plateaus
doi:10.1038/281689a0 Pu JY, He L, Wu SY, Zhang P, Huang X
