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Insufficient intrinsic factor production, common in older adults due to age-related absorption decline, can also lead to deficiency
Most people feel the effects for about one week
Fat storage pathways become more active
If B12 levels are already within a normal range, additional B12 may not lead to noticeable changes in energy or performance
In terms of other supplements: be cautious with energy drinks or so-called vitamin shots that might also contain high doses of B3 or B6
The ultimate goal is to generate clinical evidence that leads to official changes in treatment guidelines, ensuring that injection frequency is based on patient-reported symptoms and individual clinical response, rather than solely on national blanket protocols
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