OAKLAND, Calif. — Long-term use of commonly prescribed heartburn and ulcer medications is linked to a higher risk of vitamin B12 deficiency, according to a new study published in the Journal of the American Medical Association.
Left untreated, vitamin B12 deficiency can increase the risk of dementia, nerve damage, anemia, and other medical complications, some of which may be irreversible. Stomach acid aids in vitamin B12 absorption; suppressing the acids can lead to the health-threatening vitamin deficiency.