Which deficiency causes low stomach acid?

Zinc deficiency is the most commonly discussed deficiency linked to low stomach acid, and low iron or B vitamin status may also contribute. Stomach acid production depends on several nutrients, so an overall deficiency pattern matters more than one single vitamin. Other common causes include age, H. pylori infection, autoimmune gastritis, and acid-suppressing medications.

Disclaimer: This content is reviewed and fact-checked by Daryl Stubbs, Certified Holistic Nutritional Consultant (C.H.N.C), for educational purposes. It does not constitute medical advice or a doctor-patient relationship.