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When NNMT is too active, your NAD+ levels drop your metabolism slows, fat burning gets harder, and your body stores more fat instead of using it for energy

Methylcobalamin is best, unless you suffer from Lebers hereditary optic neuropathy (1 in 30,000 to 50,000 people), where hydroxy B12 is safer

What Happens in a Vitamin B12 Deficiency

Theyre now considered an alternative to vitamin B12 shot that some prefer because they require no needles

There is no one-size-fits-all stack

This article examines the evidence behind B12 injections, clarifies who genuinely requires them, outlines potential risks, and explores evidence-based alternatives for sustainable weight management aligned with NICE guidance and NHS prescribing standards