Vitamin B12 Deficiency

Learn how celiac disease, B12 deficiency, and neuropathy may be connected, which symptoms matter, and what to discuss with your doctor.

B12 deficiency after gastric bypass can cause fatigue, numbness, and brain fog. Learn why it happens, symptoms, testing, and practical next steps.

Can a vegan diet cause vitamin B12 deficiency? Learn the risks, symptoms, testing, and practical ways to maintain healthy B12 levels on vegan diets.