Is IBS more common in vitamin B12-deficient patients?

I have noticed several commonalities among patients with vitamin B12 levels <400 pg/mL. In addition to fatigue, paresthesias, and decreased concentration, these patients also have irritable bowel syndrome (IBS). The IBS symptoms typically improve after supplementation. I am not able to find any documentation in the literature that supports or explains this improvement in the … Continue reading Is IBS more common in vitamin B12-deficient patients?