I was diagnosed with B12 deficiency with neural symptoms in the spring of 2021. After bouncing around in treatment that I later learned was appropriate for hematologic symptoms, in August of 2021 I began injecting cyanocobalamin daily, and have continued since. Some symptoms improved, others did not, reappearing some days but not others, and I suspected that something other than B12 deficiency might be responsible for symptoms that did not improve. In July of 2022 I had a pacemaker implanted, and additional symptoms improved, while others did not, reappearing some days but not others, and again I suspected that something else was going on. A couple weeks ago, suspecting that I was getting less than the recommended amount of protein, I began taking a whey protein supplement. I felt better immediately, but then the old persistent symptoms (brain fog, headache, generally feeling ill) returned, reappearing some days but not others.
Has anyone here noticed a connection between protein deficiency and B12 deficiency?
While looking for a possible connection between protein and B12 deficiency, I came across this quite-old abstract:
sciencedirect.com/science/a...
Absorption of Co58 Labeled Cyanocobalamin in Protein Deficiency: An Experimental Study in the Rhesus Monkey.
Gastroenterology, Volume 46, Issue 2, February 1964, Pages 167-174.
Summary
A study of intestinal absorption of Co58 labeled cyanocobalamin was made in a group of rhesus monkeys in whom a picture of uncomplicated protein deficiency closely resembling kwashiorkor was induced.
Markedly diminished absorption of Co58B12 was observed in the deficient animals. The defect could be completely reversed by protein repletion. The results suggest that damage to the intestinal epithelium and probably deficiency of intrinsic factor may be responsible for the observed absorptive defect.
This study may be relevant to an understanding of tropical sprue and tropical megaloblastic anemia.