Bioscience, Biotechnology, and Biochemistry , 74(4), 641645
Low B12 or folate can lead to anemia (low red blood cell count), causing tiredness and weakness
It is used in conditions that involve oxidative stress, from Parkinsons disease to chronic obstructive pulmonary disease, and some cancer protocols use it to protect healthy cells from the side effects of chemotherapy and radiation
Biochemistry 37 , 1323913249 (1998)
The prevalence of these effects is currently unknown, and they are not commonly listed as adverse effects in US prescribing information for most agents
Again, going back to stabilizing blood sugar, lowering inflammatory fluids that flare you is important