MIC B12 Benefits and B12 With MIC Benefits: Whats Plausible vs Proven Energy and Fatigue Best-supported scenario: If you have vitamin B12 deficiency, replacing B12 can improve deficiency-related symptoms (NIH ODS provides an overview in its Vitamin B12 fact sheet )
Around 4.5 in 100 adults fitted that pattern, roughly twice as many as had classic low-B12 deficiency, and it was linked to higher long-term mortality while classic deficiency was not, once other factors were accounted for
However, this is very important: enthusiastic anecdotal reports are not a substitute for controlled clinical trials
The complete shelf life guide explains the science behind these timelines
These are not simply scientific considerations
When NNMT activity is reduced, less nicotinamide is methylated and wasted, allowing NAD pools to remain higher