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According to NHS guidelines: Below 200 ng/L (148 pmol/L) Generally indicates deficiency Below 100 ng/L (75 pmol/L) Usually shows clinical or metabolic evidence of deficiency Most healthy people have levels around 500 ng/L However, its worth noting that some people experience symptoms even with B12 levels in the normal range, particularly older adults
Injecting 30-45 minutes before fasted cardio may maximize fat oxidation during the exercise window
For keeping levels up, shots are usually given monthly
Injections of micronutrient B12 at larger doses may be necessary for older persons to keep their vitamin levels appropriate
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