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Tag: Metformin and B12

September 22, 2026

Numbness and Tingling With Diabetes: When B12, Thyroid, and Kidney Tests Matter

How B12, thyroid, and kidney results can help investigate nerve symptoms without assuming diabetes is the only cause.

Numbness, burning, or tingling in someone with diabetes deserves an explanation. Diabetic peripheral neuropathy is one possibility, but vitamin B12 deficiency, thyroid disease, kidney disease, nerve compression, and other problems can produce similar symptoms. More […]

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September 18, 2026

Vitamin B12 Deficiency and Autoimmune Gastritis: Understanding Your Blood Tests

How B12, MMA, CBC, intrinsic factor antibodies, and iron studies can clarify deficiency and absorption problems—and when each test is useful.

Vitamin B12 deficiency develops when the body does not have enough usable B12 to support normal nerve function and blood-cell production. Autoimmune gastritis is one possible cause: immune damage to the stomach lining can interfere […]

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