places to inject b12 shots Best Vitamin Injection Site: Administering B12 How to inject B12 in

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Furthermore, B12 is essential for brain health and helps to prevent memory loss and cognitive decline

In a randomized, double-blind, placebo-controlled trial in 2,919 participants (65 years) with elevated blood concentrations of homocysteine, supplementation with vitamin B 12 (500 g/day) and folic acid (400 g/day) for two years did not decrease the risk of osteoporotic fracture despite reductions in homocysteine (120, 121)

So you might be within range, but maybe not functioning your best