Because NNMT intersects NAD salvage, pairing with NMN/NR is a common experimental strategy to test additive or synergistic effects on cellular NAD and metabolic endpoints
A simple blood test will reveal the severity of your deficiency and help a doctor determine whether diet, supplements, or injections are your best solution
References Brody T
Vegetarian sources of B12 include chlorella, nori, nutritional yeast and certain mushrooms, but many vegans and vegetarians have insufficient levels of B12 because its not widely found in plants. According to Mullane, not getting enough B12 can result in issues like anaemia, fatigue and more intense symptoms including shortness of breath, palpitations, pale skin, muscle weakness, numbness and tingling in hands or feet, blurred vision and memory loss
While the data suggests a correlation between weight loss and higher B12 levels, the larger consensus is that there could have been other potential factors involved so the results remain inconclusive
