Vitamin B12 Deficiency

Uses

How it works

Risks & contraindications

Evidence quality

Highlighted claims

• A vegan diet is a significant risk factor for B12 deficiency because nearly all dietary B12 comes from animal sources. — The Causes & Treatment of Burning Tongue (Mouth) – Dr. Berg
• B12 deficiency causes numbness, tingling, paresthesia, and progressive neurodegeneration. — Cyanocobalamin: The REAL Reason Why You Should Avoid Synthetic B12
• B12 deficiency leads to anemia due to impaired red blood cell formation. — Cyanocobalamin: The REAL Reason Why You Should Avoid Synthetic B12
• Consuming adequate B12 does not guarantee sufficiency if absorption is impaired, since B12 is absorbed in the distal ileum and inflammation anywhere along that pathway can block uptake. — Cyanocobalamin: The REAL Reason Why You Should Avoid Synthetic B12
• Common causes of B12 malabsorption include low stomach acid, H. pylori infection, gastric bypass surgery, and bowel conditions such as IBS, Crohn's, and diverticulitis. — Cyanocobalamin: The REAL Reason Why You Should Avoid Synthetic B12
• Untreated B12 deficiency can cause permanent nervous system damage, megaloblastic anemia, elevated homocysteine, treatment-resistant depression, and retinal damage. — 6 Causes of a Vitamin B12 Deficiency You've Never Heard Before
• B12 is critical for DNA synthesis, making deficiency a systemic problem. — 6 Causes of a Vitamin B12 Deficiency You've Never Heard Before
• Low stomach acid is one of the primary causes of B12 deficiency. — The Causes & Treatment of Burning Tongue (Mouth) – Dr. Berg
• Gastric bypass surgery reduces the body's capacity to absorb B12 by removing or bypassing key digestive sites. — The Causes & Treatment of Burning Tongue (Mouth) – Dr. Berg
• Intestinal disorders such as IBS and Crohn's disease impair B12 absorption even when dietary intake is adequate. — The Causes & Treatment of Burning Tongue (Mouth) – Dr. Berg